Description
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
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/0ee87c2814deb5e42921281116ac3abcb326880b Patch
- git.kernel.org/stable/c/11e740dc1a2c8590eb7074b5c4ab921bb6224c36 Patch
- git.kernel.org/stable/c/24ff7d465c4284529bbfa207757bffb6f44b6403 Patch
- git.kernel.org/stable/c/2dc1c3edf67abd30c757f8054a5da61927cdda21 Patch
- git.kernel.org/stable/c/6eb211788e1370af52a245d4d7da35c374c7b401 Patch
- git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8 Patch
- git.kernel.org/stable/c/c3fb926abe90d86f5e3055e0035f04d9892a118b Patch
- git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Mailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 7 November 2026
- CWE
- CWE-125
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