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In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init() padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_sdio_if1_init() error path. Using kfree() to release this vmalloc-backed buffer can lead to memory corruption. Use rtw_hal_data_deinit() to pair the free correctly and free HalData with vfree(). The bug was first flagged by an experimental static analysis tool we are developing for kernel memory-management bugs. Manual inspection confirms that the issue is still present in current mainline. An x86_64 allyesconfig build showed no new warnings. As we do not have suitable RTL8723BS SDIO hardware to test with, no runtime testing was able to be performed.

zetlyn/cve-nvd vulnerability cve CVE-2026-98160 cpe cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* known 2026-09-25

https://nvd.nist.gov/vuln/detail/CVE-2026-98160

Properties

cvss5.5
receipt
Source
NVD
Its words
5.5
Read by
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Said since
2026-10-03 00:06 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-03 00:06 UTC5.5
2026-09-29 09:45 UTC—
What the source handed over
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cvss_vectorCVSS: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
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Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCVSS: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
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cweCWE-763
receipt
Source
NVD
Its words
CWE-763
Read by
field:cve.weaknesses[].description[].value
Said since
2026-10-06 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCCWE-763
2026-09-29 09:45 UTC—
What the source handed over
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productLinux
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 UTCLinux
2026-09-29 09:45 UTC—
What the source handed over
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}
severityMEDIUM
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 12:31 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:31 UTCMEDIUM
2026-09-29 09:45 UTC—
What the source handed over
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}
statusAnalyzed
receipt
Source
NVD
Its words
Analyzed
Read by
field:cve.vulnStatus
Said since
2026-10-03 00:06 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-03 00:06 UTCAnalyzed
2026-10-02 12:00 UTCAwaiting Analysis
2026-09-29 09:45 UTCReceived
What the source handed over
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      },
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        "tags": [
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      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
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      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
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        ],
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      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
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        "url": "https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-763"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}
vendorLinux
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 UTCLinux
2026-09-29 09:45 UTC—
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/staging/rtl8723bs/os_dep/sdio_intf.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "ff6d1ba247b5c62bdb678f1069abc86ad88a1402",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "d6158333d630a1b21d8914feaf77a6f5deb185d9",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "6c017ab2b0e1b60b5be94636c94720347213d78b",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "4520d673d49dabfd42c008a33889251025f7d6d5",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "423574feaed192063ef0cd0813fb85425f39e539",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "737c928ff5092d7e55128a232c231248fc993777",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "911190f0b9511c3c81f2f2484414c1ae26f636b3",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              },
              {
                "lessThan": "264676418b726baca7be49171e306b6aa05cceb0",
                "status": "affected",
                "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/staging/rtl8723bs/os_dep/sdio_intf.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "4.12"
              },
              {
                "lessThan": "4.12",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.10.*",
                "status": "unaffected",
                "version": "5.10.270",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "5.15.*",
                "status": "unaffected",
                "version": "5.15.221",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.1.*",
                "status": "unaffected",
                "version": "6.1.188",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.6.*",
                "status": "unaffected",
                "version": "6.6.157",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.110",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.52",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.6",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc1",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "A90A101C-75E0-477B-AADD-AFC617C1616D",
                "versionEndExcluding": "5.10.270",
                "versionStartIncluding": "4.12",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "64865F15-53CF-4958-9535-E9EC89C9EDB9",
                "versionEndExcluding": "5.15.221",
                "versionStartIncluding": "5.11",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "9731F8D2-153C-4E66-8418-BBD7C3BE0B0D",
                "versionEndExcluding": "6.1.188",
                "versionStartIncluding": "5.16",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "F5E6592C-4D9C-4D99-B17A-777E25A031F5",
                "versionEndExcluding": "6.6.157",
                "versionStartIncluding": "6.2",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "A19EC695-B7E1-41E5-B0EA-E331EFDA98A9",
                "versionEndExcluding": "6.12.110",
                "versionStartIncluding": "6.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "0457F732-0EA6-47D3-A69C-17A43B435D23",
                "versionEndExcluding": "6.18.52",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "BAFE7055-A65A-44F4-BD4B-BF067EAE17F3",
                "versionEndExcluding": "7.2.6",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()\n\npadapter->HalData is allocated via vzalloc(), but incorrectly freed\nusing kfree() in the rtw_sdio_if1_init() error path. Using kfree() to\nrelease this vmalloc-backed buffer can lead to memory corruption.\n\nUse rtw_hal_data_deinit() to pair the free correctly and free\nHalData with vfree().\n\nThe bug was first flagged by an experimental static analysis tool we\nare developing for kernel memory-management bugs. Manual inspection\nconfirms that the issue is still present in current mainline.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have\nsuitable RTL8723BS SDIO hardware to test with, no runtime testing was\nable to be performed."
      }
    ],
    "id": "CVE-2026-98160",
    "lastModified": "2026-10-02T20:34:50.893",
    "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": "2026-09-25T14:17:27.627",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        ],
        "url": "https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78b"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-763"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

Text

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init() padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_sdio_if1_init() error path. Using kfree() to release this vmalloc-backed buffer can lead to memory corruption. Use rtw_hal_data_deinit() to pair the free correctly and free HalData with vfree(). The bug was first flagged by an experimental static analysis tool we are developing for kernel memory-management bugs. Manual inspection confirms that the issue is still present in current mainline. An x86_64 allyesconfig build showed no new warnings. As we do not have suitable RTL8723BS SDIO hardware to test with, no runtime testing was able to be performed.