Amazon Linux 2023 Security Advisory: ALAS2023-2026-1426
Advisory Released Date: 2026-02-18
Advisory Updated Date: 2026-02-18
Severity:
Medium
Issue Overview:
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. (CVE-2026-25068)
Affected Packages:
alsa-lib
Issue Correction:
Run dnf update alsa-lib --releasever 2023.10.20260216 or dnf update --advisory ALAS2023-2026-1426 --releasever 2023.10.20260216 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
alsa-lib-debuginfo-1.2.7.2-1.amzn2023.0.3.aarch64
alsa-lib-debugsource-1.2.7.2-1.amzn2023.0.3.aarch64
alsa-lib-1.2.7.2-1.amzn2023.0.3.aarch64
alsa-lib-devel-1.2.7.2-1.amzn2023.0.3.aarch64
noarch:
alsa-topology-1.2.7.2-1.amzn2023.0.3.noarch
alsa-ucm-1.2.7.2-1.amzn2023.0.3.noarch
src:
alsa-lib-1.2.7.2-1.amzn2023.0.3.src
x86_64:
alsa-lib-debuginfo-1.2.7.2-1.amzn2023.0.3.x86_64
alsa-lib-1.2.7.2-1.amzn2023.0.3.x86_64
alsa-lib-debugsource-1.2.7.2-1.amzn2023.0.3.x86_64
alsa-lib-devel-1.2.7.2-1.amzn2023.0.3.x86_64