CVE-2025-38729 | ALSA: usb-audio: Validate UAC3 power domain descriptors, too

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.

Published: 2025-09-04 Last update: 2026-05-12 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-38729 is rated Low Risk (33.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.18%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-38729

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.18% +0.15%
2 2026-01-09 0.06% 0.02% -0.04%
3 2026-01-04 — 0.06% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-38729

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2025-38729

GitHub Security Advisory for CVE-2025-38729

GHSA-hh9x-rr36-2f2w · Severity: high — In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Validate...

OS Trackers for CVE-2025-38729

vendor priority summary link
debian not yet assigned CVE-2025-38729 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. https://security-tracker.debian.org/tracker/CVE-2025-38729
redhat medium — https://access.redhat.com/security/cve/CVE-2025-38729
suse medium CVE-2025-38729 severity moderate: SUSE including 481 source package names (2.1.3-6.80:kernel-default-base-6.4.0-35.1.21.12, 2.1.3-7.57:kernel-default-6.4.0-35.1, …), 984 product×package rows across 201 product lines (Container suse/sl-micro/6.0/base-os-container, Container suse/sl-micro/6.0/kvm-os-container, … (201 product lines)): Fixed 702, Known Affected 231, Known Not Affected 30, First Fixed 21. https://www.suse.com/security/cve/CVE-2025-38729/
ubuntu medium CVE-2025-38729 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1414 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1017, ignored 176, released 150, not-affected 40, needed 28, needs-triage 2, pending 1. https://ubuntu.com/security/CVE-2025-38729

Affected software / configurations for CVE-2025-38729

Vendor Product Version Raw CPE
linux linux_kernel >= 4.17, < 5.4.297 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.241 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.190 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 6.1.149 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.6.103 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.7, < 6.12.43 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.13, < 6.15.11 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.16, < 6.16.2 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel 6.17 cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2025-38729

URL Tags
https://git.kernel.org/stable/c/07c8d78dbb5e0ff8b23f7fd69cd1d4e2ba22b3dc Patch
https://git.kernel.org/stable/c/1666207ba0a5973735ef010812536adde6174e81 Patch
https://git.kernel.org/stable/c/29b415ec09f5b9d1dfa2423b826725a8c8796b9a Patch
https://git.kernel.org/stable/c/40714daf4d0448e1692c78563faf0ed0f9d9b5c7 Patch
https://git.kernel.org/stable/c/452ad54f432675982cc0d6eb6c40a6c86ac61dbd Patch
https://git.kernel.org/stable/c/cd08d390d15b204cac1d3174f5f149a20c52e61a Patch
https://git.kernel.org/stable/c/d832ccbc301fbd9e5a1d691bdcf461cdb514595f Patch
https://git.kernel.org/stable/c/ebc9e06b6ea978a20abf9b87d41afc51b2d745ac Patch
https://git.kernel.org/stable/c/f03418bb9d542f44df78eec2eff4ac83c0a8ac0d Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-032379.html
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