This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-56109 →

DEBIAN-CVE-2026-56109

The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() in src/conf.c that allows att...

Original description

The description as published by the source.

The Advanced Linux Sound Architecture (ALSA) library before 1.2.16.1 contains a double-free vulnerability in parse_def() in src/conf.c that allows attackers to corrupt memory by supplying maliciously crafted ALSA configuration text. When parsing nested compound or array configuration blocks, parse_def() fails to check return values before continuing, causing snd_config_delete() to be called twice on the same already-freed node, resulting in a NULL-pointer write or invalid memory read.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 alsa-lib

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 alsa-lib

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 alsa-lib

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.16.1-1"}]}]

References

advisory security-tracker.debian.org