CVE-2026-25068
Published: January 30, 2026Last modified: February 10, 2026
Description
alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder. The tplg_decode_control_mixer1() function reads the num_channels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array (SND_TPLG_MAX_CHAN). A crafted topology file with an excessive num_channels value can cause out-of-bounds heap writes, leading to a crash.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | alsa-lib | Fixed (1.2.8-r1) |
| 25 LTS | alsa-lib | Fixed (1.2.14-r1) | |
| Stream | alsa-lib | Fixed (1.2.15.3-r1) |