CVE-2025-38729 ALSA: usb-audio: Validate UAC3 power domain descriptors, too
A malicious USB audio device can trigger out-of-bounds memory access in the Linux kernel, potentially leading to code execution or system crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38729?
CVE-2025-38729 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 4 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-787
Which versions are affected by CVE-2025-38729?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38729?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-38729 being exploited?
There is no known exploitation of CVE-2025-38729 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-66803, AZL-73848, BELL-CVE-2025-38729, DEBIAN-CVE-2025-38729, GHSA-hh9x-rr36-2f2w, ROOT-OS-DEBIAN-11-CVE-2025-38729 and 4 more.