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.

INFO

Published Date :

2026-01-29T19:08:03.986Z

Last Modified :

2026-03-05T01:30:43.117Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25068 vulnerability.

Vendors Products
Alsa-project
  • Alsa-lib
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25068.

URL Resource
https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40 cve-icon cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2026/02/msg00008.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-25068 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-25068 cve-icon
https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflow cve-icon cve-icon cve-icon
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