CVE-2025-38249: Debian Linux

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device. The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read. Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 4.17, before 5.4.296 (fixed in 5.4.296); from 5.5, before 5.10.240 (fixed in 5.10.240); from 5.11, before 5.15.187 (fixed in 5.15.187); from 5.16, before 6.1.143 (fixed in 6.1.143); from 6.2, before 6.6.96 (fixed in 6.6.96); from 6.7, before 6.12.36 (fixed in 6.12.36); …

Published 2025-07-09. Last modified 2026-06-17.