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Vulnerability · Published Sep 23, 2026 · Assigned by VulnCheck

CVE-2026-96674alsa-lib through 1.2.16.1 Integer Overflow via Topology File

Medium 4.4

In plain English

A medium-severity integer overflow 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 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.1%top 98.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

alsa-lib through 1.2.16.1 computes combined topology element size using 32-bit arithmetic in src/topology/ctl.c, allowing integer overflow that defeats bounds checks. Attackers can supply crafted topology files that wrap size calculations, causing the decoder to read beyond the topology buffer and potentially leak sensitive data or crash the application.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12alsa-libno fix listedDEBIAN-CVE-2026-96674
Debian:13alsa-libno fix listedDEBIAN-CVE-2026-96674
Debian:14alsa-libno fix listedDEBIAN-CVE-2026-96674
Ubuntu:22.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-96674
Ubuntu:24.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-96674
Ubuntu:26.04:LTSalsa-libno fix listedUBUNTU-CVE-2026-96674
Ubuntu:26.10alsa-libno fix listedUBUNTU-CVE-2026-96674

Affected products (as reported)

VendorProductVersions
ALSA Project alsa-lib 0 – through 1.2.16.1

Weakness: CWE-190 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

References