CVE-2026-23318 (GCVE-0-2026-23318)
Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-04-18 08:57
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 , < 82a7d0a1b88798de1a609130080ce0c65dd869e9
(git)
Affected: 57f8770620e9b51c61089751f0b5ad3dbe376ff2 , < 8307d93e63d5f54ef10412d4db2dd551e920dee4 (git) 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) |
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}
}
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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.
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