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

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27
VLAI?
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
References
Impacted products
Vendor Product Version
Linux 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)
Create a notification for this product.
    Linux 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)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/validate.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "lessThan": "a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "lessThan": "d3904ca40515272681ae61ad6f561c24f190957f",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "lessThan": "1e5753ff4c2e86aa88516f97a224c90a3d0b133e",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "lessThan": "499ffd15b00dc91ac95c28f76959dfb5cdcc84d5",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "lessThan": "54f9d645a5453d0bfece0c465d34aaf072ea99fa",
              "status": "affected",
              "version": "57f8770620e9b51c61089751f0b5ad3dbe376ff2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "17821e2fb16752f5d363fb5c3f8aab4df41b9bcc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/validate.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.77",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.17",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc2",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.84",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.3.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:27:12.884Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e"
        },
        {
          "url": "https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa"
        }
      ],
      "title": "ALSA: usb-audio: Use correct version for UAC3 header validation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23318",
    "datePublished": "2026-03-25T10:27:12.884Z",
    "dateReserved": "2026-01-13T15:37:45.995Z",
    "dateUpdated": "2026-03-25T10:27:12.884Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23318\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-25T11:16:28.390\",\"lastModified\":\"2026-03-25T15:41:33.977\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.