Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-4041
Advisory Released Date: 2026-10-24
Advisory Updated Date: 2026-10-26
alsa-lib through 1.2.16.1 contains a stack buffer overflow in the __snd_ctl_ascii_elem_id_parse() function that writes one byte past a 64-byte buffer when parsing a name= field with 64 or more characters. Attackers can supply a long control-element identifier string through saved state files or command-line arguments to overwrite adjacent stack memory and crash the calling process. (CVE-2026-90781)
alsa-lib through 1.2.16.1 contains a denial of service vulnerability in the multi PCM plugin that fails to validate sparse binding indices before array access. Attackers can supply a malicious ALSA configuration file with sparse bindings to trigger an out-of-bounds array read and assertion failure, causing the application to abort. (CVE-2026-96675)
Affected Packages:
alsa-lib
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update alsa-lib or yum update --advisory ALAS2-2026-4041 to update your system.
aarch64:
alsa-lib-1.1.4.1-2.amzn2.0.2.aarch64
alsa-lib-devel-1.1.4.1-2.amzn2.0.2.aarch64
alsa-lib-debuginfo-1.1.4.1-2.amzn2.0.2.aarch64
i686:
alsa-lib-1.1.4.1-2.amzn2.0.2.i686
alsa-lib-devel-1.1.4.1-2.amzn2.0.2.i686
alsa-lib-debuginfo-1.1.4.1-2.amzn2.0.2.i686
src:
alsa-lib-1.1.4.1-2.amzn2.0.2.src
x86_64:
alsa-lib-1.1.4.1-2.amzn2.0.2.x86_64
alsa-lib-devel-1.1.4.1-2.amzn2.0.2.x86_64
alsa-lib-debuginfo-1.1.4.1-2.amzn2.0.2.x86_64