CVE-2026-46146
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
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Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() The convert_chmap_v3() has a loop with its increment size of cs_desc->wLength, but we forgot to validate cs_desc->wLength itself, which may lead to potential endless loop by a malformed descriptor. Add a proper size check to abort the loop for plugging the hole.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d
- https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d
- https://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8
- https://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3
- https://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd
References (9)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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