ALSA: usb-audio: Use correct version for UAC3 header validation
Summary
| CVE | CVE-2026-23318 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-25 11:16:28 UTC |
| Updated | 2026-04-18 09:16:18 UTC |
| 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. |
Risk And Classification
EPSS: 0.000320000 probability, percentile 0.090980000 (date 2026-04-18)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 82a7d0a1b88798de1a609130080ce0c65dd869e9 git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 8307d93e63d5f54ef10412d4db2dd551e920dee4 git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 d3904ca40515272681ae61ad6f561c24f190957f git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 1e5753ff4c2e86aa88516f97a224c90a3d0b133e git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 499ffd15b00dc91ac95c28f76959dfb5cdcc84d5 git | Not specified |
| CNA | Linux | Linux | affected 57f8770620e9b51c61089751f0b5ad3dbe376ff2 54f9d645a5453d0bfece0c465d34aaf072ea99fa git | Not specified |
| CNA | Linux | Linux | affected 17821e2fb16752f5d363fb5c3f8aab4df41b9bcc git | Not specified |
| CNA | Linux | Linux | affected bf74a46aebb1b5ab5e5f25bafa4ae0a453ba813a git | Not specified |
| CNA | Linux | Linux | affected 5.4 | Not specified |
| CNA | Linux | Linux | unaffected 5.4 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.77 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.17 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.7 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/1e5753ff4c2e86aa88516f97a224c90a3d0b133e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/499ffd15b00dc91ac95c28f76959dfb5cdcc84d5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/54f9d645a5453d0bfece0c465d34aaf072ea99fa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8307d93e63d5f54ef10412d4db2dd551e920dee4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0dcd1ed96c03459cf14706885c9dd3c1fd8bd29f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/82a7d0a1b88798de1a609130080ce0c65dd869e9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d3904ca40515272681ae61ad6f561c24f190957f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a0c6ae2ea84528f198bf7fd0117f12fd0cf6d7cc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.