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ALSA: usb-audio: Use correct version for UAC3 header validation

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Use correct version for UAC3 header validation The entry of the validators table for UAC3 AC header descriptor is defined with the wrong protocol version UAC_VERSION_2, while it should have been UAC_VERSION_3. This results in the validator never matching for actual UAC3 devices (protocol == UAC_VERSION_3), causing their header descriptors to bypass validation entirely. A malicious USB device presenting a truncated UAC3 header could exploit this to cause out-of-bounds reads when the driver later accesses unvalidated descriptor fields. The bug was introduced in the same commit as the recently fixed UAC3 feature unit sub-type typo, and appears to be from the same copy-paste error when the UAC3 section was created from the UAC2 section.

Announced Source revision 1
Original source ↗

CVE-2026-23318

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-23318

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "82a7d0a1b88798de1a609130080ce0c65dd869e9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "8307d93e63d5f54ef10412d4db2dd551e920dee4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc",
        "versionType": "git"
      },
      {
        "status": "affected",
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        "lessThan": "d3904ca40515272681ae61ad6f561c24f190957f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "1e5753ff4c2e86aa88516f97a224c90a3d0b133e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
        "lessThan": "499ffd15b00dc91ac95c28f76959dfb5cdcc84d5",
        "versionType": "git"
      },
      {
        "status": "affected",
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        "lessThan": "54f9d645a5453d0bfece0c465d34aaf072ea99fa",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "17821e2fb16752f5d363fb5c3f8aab4df41b9bcc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "4.19.84",
        "lessThan": "4.20",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.3.11",
        "lessThan": "5.4",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "sound/usb/validate.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.4"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.4",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.167",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.130",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.77",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.17",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.7",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "sound/usb/validate.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-23318

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#27224 · Revision 1
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Publisher date
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