CVE-2026-23318ALSA: usb-audio: Use correct version for UAC3 header validation
- 7.1HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 96% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 82a7d0a1b88798de1a609130080ce0c65dd869e9
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 8307d93e63d5f54ef10412d4db2dd551e920dee4
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < d3904ca40515272681ae61ad6f561c24f190957f
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 1e5753ff4c2e86aa88516f97a224c90a3d0b133e
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 499ffd15b00dc91ac95c28f76959dfb5cdcc84d5
- affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 – < 54f9d645a5453d0bfece0c465d34aaf072ea99fa
- affected 17821e2fb16752f5d363fb5c3f8aab4df41b9bcc
- affected bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a
- affected 4.19.84 – < 4.20
- affected 5.3.11 – < 5.4
- affected 5.4
- unaffected < 5.4
- unaffected 5.10.253 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.167 – ≤ 6.1.*
- unaffected 6.6.130 – ≤ 6.6.*
- unaffected 6.12.77 – ≤ 6.12.*
- unaffected 6.18.17 – ≤ 6.18.*
- unaffected 6.19.7 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References9
- https://git.kernel.org/stable/c/82a7d0a1b88798de1a609130080ce0c65dd869e9 (opens in a new tab)
- https://git.kernel.org/stable/c/8307d93e63d5f54ef10412d4db2dd551e920dee4 (opens in a new tab)
- https://git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f (opens in a new tab)
- https://git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc (opens in a new tab)
- https://git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f (opens in a new tab)
- https://git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e (opens in a new tab)
- https://git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5 (opens in a new tab)
- https://git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-15267 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23318)Record last updated .