kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf

cve CVE-2026-97930 3 sources, 4 claims · Watch

Red Hat writes:
kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf the claim

Severity they disagree: unknown GitHub advisories
moderate Red Hat
CVSS: 5.5 Red Hat
Vendor: Linux NVD
Product: Linux NVD
CWE: CWE-125 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

2026-09-25	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: fix...	GitHub advisories
2026-09-25	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf The in04_last array in struct usx2ydev is declared as char[24], but in04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes. In i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization path): memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last)); This copies 24 bytes from a 21-byte slab allocation, reading 3 bytes past the end of the source object. Introduce a USX2Y_IN04_SIZE constant defined as sizeof(struct us428_ctls) and use it consistently for the in04_last array, the in04_buf allocation, the URB transfer length, and the comparison loop, replacing the bare 24 and 21 literals throughout.	NVD
2026-09-25	first spoke of it: kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf	Red Hat

What it is to other things

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

affects	`linux/linux` NVD says “Linux · Linux”
made_by	`linux` NVD says “Linux”

Every value, with what each source said and its receipt

Property Source Said Means here

CVSS

cvss

Red Hat

5.5

receipt

Source: Red Hat
Its words: 5.5
Read by: field:cvss3_score
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97930",
  "CWE": "CWE-125",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541134",
  "bugzilla_description": "kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf",
  "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": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97930.json",
  "severity": "moderate"
}

—

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

What the source handed over

{
  "CVE": "CVE-2026-97930",
  "CWE": "CWE-125",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541134",
  "bugzilla_description": "kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf",
  "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": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97930.json",
  "severity": "moderate"
}

—

CWE

cwe

Red Hat

CWE-125

receipt

Source: Red Hat
Its words: CWE-125
Read by: field:CWE
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97930",
  "CWE": "CWE-125",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541134",
  "bugzilla_description": "kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf",
  "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": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97930.json",
  "severity": "moderate"
}

—

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": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "229cab526580f82839ae8e4e379753c8cf16952e",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "381495b5b3da12d714e53d9d12d955b13fe26eac",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "b5753bdfd909f7f095fb464d67802b5e52cbadbf",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "861111a14740e12c36d363e9830f8daa734279c9",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "2.6.12"
              },
              {
                "lessThan": "2.6.12",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usbusx2y: fix in04_last array size mismatch with in04_buf\n\nThe in04_last array in struct usx2ydev is declared as char[24], but\nin04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes.\nIn i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization\npath):\n\n    memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));\n\nThis copies 24 bytes from a 21-byte slab allocation, reading 3 bytes\npast the end of the source object.\n\nIntroduce a USX2Y_IN04_SIZE constant defined as sizeof(struct\nus428_ctls) and use it consistently for the in04_last array, the\nin04_buf allocation, the URB transfer length, and the comparison loop,\nreplacing the bare 24 and 21 literals throughout."
      }
    ],
    "id": "CVE-2026-97930",
    "lastModified": "2026-09-25T11:17:20.277",
    "metrics": {},
    "published": "2026-09-25T11:17:20.277",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/229cab526580f82839ae8e4e379753c8cf16952e"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/381495b5b3da12d714e53d9d12d955b13fe26eac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/861111a14740e12c36d363e9830f8daa734279c9"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b5753bdfd909f7f095fb464d67802b5e52cbadbf"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

Severity

severity

conflict

GitHub advisories

unknown

receipt

Source: GitHub advisories
Said since: 2026-09-26 15:00 UTC
Last answered: 2026-10-06 13:46 UTC
Original: open at the source

This source has not kept a receipt for this claim yet. The next update that reads it will.

—

Severity

severity

conflict

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: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97930",
  "CWE": "CWE-125",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541134",
  "bugzilla_description": "kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf",
  "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": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97930.json",
  "severity": "moderate"
}

medium

Status

status

NVD

Received

receipt

Source: NVD
Its words: Received
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": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "229cab526580f82839ae8e4e379753c8cf16952e",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "381495b5b3da12d714e53d9d12d955b13fe26eac",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "b5753bdfd909f7f095fb464d67802b5e52cbadbf",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "861111a14740e12c36d363e9830f8daa734279c9",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "2.6.12"
              },
              {
                "lessThan": "2.6.12",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usbusx2y: fix in04_last array size mismatch with in04_buf\n\nThe in04_last array in struct usx2ydev is declared as char[24], but\nin04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes.\nIn i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization\npath):\n\n    memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));\n\nThis copies 24 bytes from a 21-byte slab allocation, reading 3 bytes\npast the end of the source object.\n\nIntroduce a USX2Y_IN04_SIZE constant defined as sizeof(struct\nus428_ctls) and use it consistently for the in04_last array, the\nin04_buf allocation, the URB transfer length, and the comparison loop,\nreplacing the bare 24 and 21 literals throughout."
      }
    ],
    "id": "CVE-2026-97930",
    "lastModified": "2026-09-25T11:17:20.277",
    "metrics": {},
    "published": "2026-09-25T11:17:20.277",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/229cab526580f82839ae8e4e379753c8cf16952e"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/381495b5b3da12d714e53d9d12d955b13fe26eac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/861111a14740e12c36d363e9830f8daa734279c9"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b5753bdfd909f7f095fb464d67802b5e52cbadbf"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

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": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "229cab526580f82839ae8e4e379753c8cf16952e",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "381495b5b3da12d714e53d9d12d955b13fe26eac",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "b5753bdfd909f7f095fb464d67802b5e52cbadbf",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              },
              {
                "lessThan": "861111a14740e12c36d363e9830f8daa734279c9",
                "status": "affected",
                "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "sound/usb/usx2y/usbusx2y.c",
              "sound/usb/usx2y/usbusx2y.h"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "2.6.12"
              },
              {
                "lessThan": "2.6.12",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usbusx2y: fix in04_last array size mismatch with in04_buf\n\nThe in04_last array in struct usx2ydev is declared as char[24], but\nin04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes.\nIn i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization\npath):\n\n    memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));\n\nThis copies 24 bytes from a 21-byte slab allocation, reading 3 bytes\npast the end of the source object.\n\nIntroduce a USX2Y_IN04_SIZE constant defined as sizeof(struct\nus428_ctls) and use it consistently for the in04_last array, the\nin04_buf allocation, the URB transfer length, and the comparison loop,\nreplacing the bare 24 and 21 literals throughout."
      }
    ],
    "id": "CVE-2026-97930",
    "lastModified": "2026-09-25T11:17:20.277",
    "metrics": {},
    "published": "2026-09-25T11:17:20.277",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/229cab526580f82839ae8e4e379753c8cf16952e"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/381495b5b3da12d714e53d9d12d955b13fe26eac"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/861111a14740e12c36d363e9830f8daa734279c9"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b5753bdfd909f7f095fb464d67802b5e52cbadbf"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

Every claim, by kind

vulnerability

kernel: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf zetlyn/cve-redhat · 2026-09-25	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-125 severity moderate	source
In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: fix in04_last array size mismatch with in04_buf The in04_last array in struct usx2ydev is declared as char[24], but in04_buf is allocated as sizeof(struct us428_ctls) which is 21 bytes. In i_usx2y_in04_int(), when ctl_snapshot_last == -2 (initialization path): memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last)); This copies 24 bytes from a 21-byte slab allocation, reading 3 bytes past the end of the source object. Introduce a USX2Y_IN04_SIZE constant defined as sizeof(struct us428_ctls) and use it consistently for the in04_last array, the in04_buf allocation, the URB transfer length, and the comparison loop, replacing the bare 24 and 21 literals throughout. zetlyn/cve-nvd · 2026-09-25	product Linux status Received vendor Linux	source
In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: fix... zetlyn/cve-ghsa · 2026-09-25	severity unknown	source
In the Linux kernel, the following vulnerability has been resolved: ALSA: usbusx2y: fix... zetlyn/cve-ghsa · 2026-09-25	severity unknown	source