---
id: CVE-2025-38729
title: 'ALSA: usb-audio: Validate UAC3 power domain descriptors, too'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: usb-audio: Validate UAC3 power domain descriptors, too

  UAC3 power domain descriptors need to be verified with its variable
  bLength for avoiding the unexpected OO…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    1666207ba0a5973735ef010812536adde6174e81
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    ebc9e06b6ea978a20abf9b87d41afc51b2d745ac
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    f03418bb9d542f44df78eec2eff4ac83c0a8ac0d
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    40714daf4d0448e1692c78563faf0ed0f9d9b5c7
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    cd08d390d15b204cac1d3174f5f149a20c52e61a
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    29b415ec09f5b9d1dfa2423b826725a8c8796b9a
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    452ad54f432675982cc0d6eb6c40a6c86ac61dbd
  - >-
    Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf <
    d832ccbc301fbd9e5a1d691bdcf461cdb514595f
  - Linux 4.17
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T21:08:18.008958Z'
published: '2025-09-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:12:54.561Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-38729'
references:
  - url: 'https://git.kernel.org/stable/c/1666207ba0a5973735ef010812536adde6174e81'
  - url: 'https://git.kernel.org/stable/c/ebc9e06b6ea978a20abf9b87d41afc51b2d745ac'
  - url: 'https://git.kernel.org/stable/c/f03418bb9d542f44df78eec2eff4ac83c0a8ac0d'
  - url: 'https://git.kernel.org/stable/c/40714daf4d0448e1692c78563faf0ed0f9d9b5c7'
  - url: 'https://git.kernel.org/stable/c/07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc'
  - url: 'https://git.kernel.org/stable/c/cd08d390d15b204cac1d3174f5f149a20c52e61a'
  - url: 'https://git.kernel.org/stable/c/29b415ec09f5b9d1dfa2423b826725a8c8796b9a'
  - url: 'https://git.kernel.org/stable/c/452ad54f432675982cc0d6eb6c40a6c86ac61dbd'
  - url: 'https://git.kernel.org/stable/c/d832ccbc301fbd9e5a1d691bdcf461cdb514595f'
tags:
  - cve.org
epss: 0.002
epssPercentile: 0.09848
ingestedAt: '2026-11-05T22:38:32.016Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Validate UAC3 power domain descriptors, too

UAC3 power domain descriptors need to be verified with its variable
bLength for avoiding the unexpected OOB accesses by malicious
firmware, too.

## Affected

- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < 1666207ba0a5973735ef010812536adde6174e81`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < ebc9e06b6ea978a20abf9b87d41afc51b2d745ac`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < f03418bb9d542f44df78eec2eff4ac83c0a8ac0d`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < 40714daf4d0448e1692c78563faf0ed0f9d9b5c7`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < 07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < cd08d390d15b204cac1d3174f5f149a20c52e61a`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < 29b415ec09f5b9d1dfa2423b826725a8c8796b9a`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < 452ad54f432675982cc0d6eb6c40a6c86ac61dbd`
- `Linux >= 9a2fe9b801f585baccf8352d82839dcd54b300cf < d832ccbc301fbd9e5a1d691bdcf461cdb514595f`
- `Linux 4.17`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.