Vulnerability-Lookup

GHSA-X63J-V2J2-M8FV

Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-03-25 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23318"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T11:16:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Use correct version for UAC3 header validation\n\nThe entry of the validators table for UAC3 AC header descriptor is\ndefined with the wrong protocol version UAC_VERSION_2, while it should\nhave been UAC_VERSION_3.  This results in the validator never matching\nfor actual UAC3 devices (protocol == UAC_VERSION_3), causing their\nheader descriptors to bypass validation entirely.  A malicious USB\ndevice presenting a truncated UAC3 header could exploit this to cause\nout-of-bounds reads when the driver later accesses unvalidated\ndescriptor fields.\n\nThe bug was introduced in the same commit as the recently fixed UAC3\nfeature unit sub-type typo, and appears to be from the same copy-paste\nerror when the UAC3 section was created from the UAC2 section.",
  "id": "GHSA-x63j-v2j2-m8fv",
  "modified": "2026-03-25T12:30:22Z",
  "published": "2026-03-25T12:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23318"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23318 (GCVE-0-2026-23318)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27

Title

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

Summary

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0dcd1ed96c03459cf…
	https://git.kernel.org/stable/c/a0c6ae2ea84528f19…
	https://git.kernel.org/stable/c/d3904ca4051527268…
	https://git.kernel.org/stable/c/1e5753ff4c2e86aa8…
	https://git.kernel.org/stable/c/499ffd15b00dc91ac…
	https://git.kernel.org/stable/c/54f9d645a5453d0bf…

Impacted products

Vendor

Product

Version

Linux

Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < 0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f (git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc (git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < d3904ca40515272681ae61ad6f561c24f190957f (git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < 1e5753ff4c2e86aa88516f97a224c90a3d0b133e (git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < 499ffd15b00dc91ac95c28f76959dfb5cdcc84d5 (git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < 54f9d645a5453d0bfece0c465d34aaf072ea99fa (git)
Affected: 17821e2fb16752f5d363fb5c3f8aab4df41b9bcc (git)
Affected: bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a (git)

Linux

Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc2 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "sound/usb/validate.c"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.18.17",
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            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc2",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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                },
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:27:12.884Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc"
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        {
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    "datePublished": "2026-03-25T10:27:12.884Z",
    "dateReserved": "2026-01-13T15:37:45.995Z",
    "dateUpdated": "2026-03-25T10:27:12.884Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-X63J-V2J2-M8FV

CVE-2026-23318 (GCVE-0-2026-23318)

Tags

Sightings

Nomenclature