kernel: USB: serial: keyspan_pda: fix information leak

cve CVE-2026-64336 2 sources, 2 claims · Watch

Red Hat writes:
kernel: USB: serial: keyspan_pda: fix information leak the claim

Severity: MEDIUM NVD
moderate Red Hat
CVSS: 5.5 NVD
5.5 Red Hat
Fixed in: 5.11 NVD
Vendor: Linux NVD
Product: Linux NVD
CWE: CWE-401 NVD
CWE-787 Red Hat

How far exploitation has got

No public code known
Proof of concept
Proof of concept, verified
A Metasploit module
Exploited in the wild
Used in ransomware campaigns

Timeline

2026-07-25	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan_pda: fix information leak The write() callback is supposed to return the number of characters accepted or a negative errno. Since the addition of write fifo support the keyspan_pda implementation will however return the number characters submitted to the device if the write urb is not already in use. If this number is larger than the number of characters passed to write(), the line discipline continues writing data from beyond the tty write buffer. Fix the information leak by making sure that keyspan_pda_write_start() returns zero on success as intended.	NVD
2026-07-25	first spoke of it: kernel: USB: serial: keyspan_pda: fix information leak	Red Hat

What it is to other things

affects	linux/linux_kernel NVD
made_by	linux NVD

In words only, so not counted until a person confirms one:

affects

linux/linux

NVD says “Linux · Linux”

Every value, with what each source said and its receipt

Property Source Said Means here

CVSS

cvss

NVD

5.5

receipt

Source: NVD
Its words: 5.5
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

CVSS

cvss

Red Hat

5.5

receipt

Source: Red Hat
Its words: 5.5
Read by: field:cvss3_score
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-64336",
  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2507055",
  "bugzilla_description": "kernel: USB: serial: keyspan_pda: fix information leak",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-07-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-64336.json",
  "severity": "moderate"
}

—

CVSS vector

cvss_vector

NVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

receipt

Source: NVD
Its words: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

CVSS vector

cvss_vector

Red Hat

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

receipt

Source: Red Hat
Its words: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Read by: field:cvss3_scoring_vector
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

2026-10-06 13:01 UTC	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2026-09-29 09:44 UTC	—

What the source handed over

{
  "CVE": "CVE-2026-64336",
  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2507055",
  "bugzilla_description": "kernel: USB: serial: keyspan_pda: fix information leak",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-07-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-64336.json",
  "severity": "moderate"
}

—

CWE

cwe

different words

NVD

CWE-401

receipt

Source: NVD
Its words: CWE-401
Read by: field:cve.weaknesses[].description[].value
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	CWE-401
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

CWE

cwe

different words

Red Hat

CWE-787

receipt

Source: Red Hat
Its words: CWE-787
Read by: field:CWE
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-64336",
  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2507055",
  "bugzilla_description": "kernel: USB: serial: keyspan_pda: fix information leak",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-07-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-64336.json",
  "severity": "moderate"
}

—

Fixed in

fixed_in

NVD

5.11

receipt

Source: NVD
Its words: 5.11
Read by: field:cve.affected[].affectedData[].versions[status=affected].lessThan
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	5.11
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

Product

product

NVD

Linux

receipt

Source: NVD
Its words: Linux
Read by: field:cve.affected[].affectedData[].product
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	Linux
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

Severity

severity

NVD

MEDIUM

From 4.0 to 6.9.

receipt

Source: NVD
Its words: MEDIUM
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	MEDIUM
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

medium

Severity

severity

Red Hat

moderate

A flaw that is harder to exploit, or whose impact is limited.

receipt

Source: Red Hat
Its words: moderate
Read by: field:severity
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-64336",
  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2507055",
  "bugzilla_description": "kernel: USB: serial: keyspan_pda: fix information leak",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-07-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-64336.json",
  "severity": "moderate"
}

medium

Status

status

NVD

Modified

receipt

Source: NVD
Its words: Modified
Read by: field:cve.vulnStatus
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

Vendor

vendor

NVD

Linux

receipt

Source: NVD
Its words: Linux
Read by: field:cve.affected[].affectedData[].vendor
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	Linux
2026-09-29 09:45 UTC	—

What the source handed over

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "b069b7029862fafaff331d4c664d97d4ae828d6d",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e52ca411f50539ff1d0c877b9312771ca8a858c1",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "2f7a6b8ab3845bd1da02604f1a874b52a4555a72",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "e1494191a3aac665d3a2fce16169a97c346253ec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "cf6ca0aefae03958cfb5b189b0adbfb25c06bfac",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "d4b12b6b395e43a2b1d80be3745631fcaa9c047b",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "lessThan": "6bfc8d01ac4068eced509f8fc74d0cd205e4dcec",
                "status": "affected",
                "version": "034e38e8f68767fb5438ae3e608ee82919674177",
                "versionType": "git"
              },
              {
                "status": "affected",
                "version": "02407bc7d42347da7ed2a3926a0b824bfc614914",
                "versionType": "git"
              },
              {
                "lessThan": "5.11",
                "status": "affected",
                "version": "5.10.266",
                "versionType": "semver"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/usb/serial/keyspan_pda.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.11"
              },
              {
                "lessThan": "5.11",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.212",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.178",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.145",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.96",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.39",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.1.*",
                "status": "unaffected",
                "version": "7.1.4",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.2",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "8E99FB01-CD93-41AF-A653-3F450652B9A6",
                "versionEndExcluding": "5.15.212",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "092233C7-F4E0-40C8-BD4D-A28FE50DFE20",
                "versionEndExcluding": "6.1.178",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "7046B092-F810-4440-ACE6-60218518EECE",
                "versionEndExcluding": "6.6.145",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "38A8100E-2B1A-462F-AEE9-8901B870FEF2",
                "versionEndExcluding": "6.12.96",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "914AE4BC-3D59-4C5A-9DB5-9CE327B429F7",
                "versionEndExcluding": "6.18.39",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42",
                "versionEndExcluding": "7.1.4",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*",
                "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*",
                "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: keyspan_pda: fix information leak\n\nThe write() callback is supposed to return the number of characters\naccepted or a negative errno. Since the addition of write fifo support\nthe keyspan_pda implementation will however return the number characters\nsubmitted to the device if the write urb is not already in use. If this\nnumber is larger than the number of characters passed to write(), the\nline discipline continues writing data from beyond the tty write buffer.\n\nFix the information leak by making sure that keyspan_pda_write_start()\nreturns zero on success as intended."
      }
    ],
    "id": "CVE-2026-64336",
    "lastModified": "2026-09-14T12:17:44.537",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-25T10:17:15.463",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/2f7a6b8ab3845bd1da02604f1a874b52a4555a72"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6bfc8d01ac4068eced509f8fc74d0cd205e4dcec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/b069b7029862fafaff331d4c664d97d4ae828d6d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/cf6ca0aefae03958cfb5b189b0adbfb25c06bfac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d4b12b6b395e43a2b1d80be3745631fcaa9c047b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e1494191a3aac665d3a2fce16169a97c346253ec"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/e52ca411f50539ff1d0c877b9312771ca8a858c1"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-401"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

Every claim, by kind

vulnerability

kernel: USB: serial: keyspan_pda: fix information leak zetlyn/cve-redhat · 2026-07-25	cvss 5.5 cvss_vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H cwe CWE-787 severity moderate	source
In the Linux kernel, the following vulnerability has been resolved: USB: serial: keyspan_pda: fix information leak The write() callback is supposed to return the number of characters accepted or a negative errno. Since the addition of write fifo support the keyspan_pda implementation will however return the number characters submitted to the device if the write urb is not already in use. If this number is larger than the number of characters passed to write(), the line discipline continues writing data from beyond the tty write buffer. Fix the information leak by making sure that keyspan_pda_write_start() returns zero on success as intended. zetlyn/cve-nvd · 2026-07-25	cvss 5.5 cvss_vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H cwe CWE-401 fixed_in 5.11 product Linux severity MEDIUM status Modified vendor Linux	source