Vulnerability · Published Sep 23, 2026 · Assigned by VulnCheck
CVE-2026-96675alsa-lib through 1.2.16.1 Denial of Service via pcm_multi
Low 3.3
In plain English
A low-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 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)3.3Low
Exploit odds (30 days)0.1%top 98.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | alsa-lib | no fix listed | DEBIAN-CVE-2026-96675 |
| Debian:13 | alsa-lib | no fix listed | DEBIAN-CVE-2026-96675 |
| Debian:14 | alsa-lib | no fix listed | DEBIAN-CVE-2026-96675 |
| Ubuntu:22.04:LTS | alsa-lib | no fix listed | UBUNTU-CVE-2026-96675 |
| Ubuntu:24.04:LTS | alsa-lib | no fix listed | UBUNTU-CVE-2026-96675 |
| Ubuntu:26.04:LTS | alsa-lib | no fix listed | UBUNTU-CVE-2026-96675 |
| Ubuntu:26.10 | alsa-lib | no fix listed | UBUNTU-CVE-2026-96675 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ALSA Project | alsa-lib | 0 – through 1.2.16.1 |
Weakness: CWE-129 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/alsa-project/alsa-lib/pull/527 issue-tracking, patch
- https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/pcm/pcm_multi.c#L1122-L1131 technical-description
- https://github.com/alsa-project/alsa-lib product
- VulnCheck Advisory: alsa-lib through 1.2.16.1 Denial of Service via pcm_multi third-party-advisory