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Vulnerability · Published Sep 13, 2026 · Assigned by VulnCheck

CVE-2026-90781alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse()

Medium 4.4

In plain English

A medium-severity security flaw in alsa-lib from ALSA Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.2%top 92.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12alsa-libno fix listedDEBIAN-CVE-2026-90781
Debian:13alsa-libno fix listedDEBIAN-CVE-2026-90781
Debian:14alsa-lib1.2.16.1-2DEBIAN-CVE-2026-90781
Ubuntu:22.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-90781
Ubuntu:24.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-90781
Ubuntu:26.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-90781
Ubuntu:26.10alsa-libno fix listedUBUNTU-CVE-2026-90781

Affected products (as reported)

VendorProductVersions
ALSA Project alsa-lib 0 – through 1.2.16.1

Weakness: CWE-193 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References