CVE-2025-38729

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

HIGH

7.8

CVSS Score

Published: September 4, 2025 at 03:33 PM UTC

Updated: October 19, 2026 at 09:10 PM UTC

3 products affected across 3 vendorsLinux KernelDebian LinuxSIMATIC CN 4100

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

4.17 ≤ v < 5.4.2975.11 ≤ v < 5.15.1905.16 ≤ v < 6.1.1495.5 ≤ v < 5.10.2416.13 ≤ v < 6.15.116.16 ≤ v < 6.16.26.2 ≤ v < 6.6.1036.7 ≤ v < 6.12.434.17 6.17 6.17 rc19a2fe9b801f585baccf8352d82839dcd54b300cf

Vendor states this is fixed in 07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc (fixed)

Vendor states this is fixed in 1666207ba0a5973735ef010812536adde6174e81 (fixed)

Vendor states this is fixed in 29b415ec09f5b9d1dfa2423b826725a8c8796b9a (fixed)

Vendor states this is fixed in 40714daf4d0448e1692c78563faf0ed0f9d9b5c7 (fixed)

Vendor states this is fixed in 452ad54f432675982cc0d6eb6c40a6c86ac61dbd (fixed)

Vendor states this is fixed in cd08d390d15b204cac1d3174f5f149a20c52e61a (fixed)

Vendor states this is fixed in d832ccbc301fbd9e5a1d691bdcf461cdb514595f (fixed)

Vendor states this is fixed in ebc9e06b6ea978a20abf9b87d41afc51b2d745ac (fixed)

Vendor states this is fixed in f03418bb9d542f44df78eec2eff4ac83c0a8ac0d (fixed)

Vendor states this is fixed in 4.17 (unaffected)

Vendor states this is fixed in 5.10.241 (unaffected)

Vendor states this is fixed in 5.15.190 (unaffected)

Vendor states this is fixed in 5.4.297 (unaffected)

Vendor states this is fixed in 6.1.149 (unaffected)

Vendor states this is fixed in 6.12.43 (unaffected)

Vendor states this is fixed in 6.15.11 (unaffected)

Vendor states this is fixed in 6.16.2 (unaffected)

Vendor states this is fixed in 6.17 (unaffected)

Vendor states this is fixed in 6.6.103 (unaffected)

SIMATIC CN 4100 · Siemens

60%

v < V5.0

Affected range stops below V5.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references