CVE-2026-96675: CWE-129 Improper Validation of Array Index in ALSA Project alsa-lib
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.
AI Analysis
Technical Summary
The ALSA Project's alsa-lib library versions up to and including 1.2.16.1 contain a vulnerability classified as CWE-129 (Improper Validation of Array Index). The multi PCM plugin fails to validate sparse binding indices before accessing arrays, allowing crafted ALSA configuration files with sparse bindings to trigger out-of-bounds array reads and assertion failures. This results in a denial of service condition by causing the application to abort.
Potential Impact
Successful exploitation causes a denial of service by crashing the affected application due to an assertion failure triggered by out-of-bounds array access. There is no indication of privilege escalation, code execution, or data disclosure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, avoid processing untrusted ALSA configuration files with sparse bindings.
CVE-2026-96675: CWE-129 Improper Validation of Array Index in ALSA Project alsa-lib
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.
CVSS v4.0
Score 4.8medium
Affected software
ALSA Project
alsa-lib
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ALSA Project's alsa-lib library versions up to and including 1.2.16.1 contain a vulnerability classified as CWE-129 (Improper Validation of Array Index). The multi PCM plugin fails to validate sparse binding indices before accessing arrays, allowing crafted ALSA configuration files with sparse bindings to trigger out-of-bounds array reads and assertion failures. This results in a denial of service condition by causing the application to abort.
Potential Impact
Successful exploitation causes a denial of service by crashing the affected application due to an assertion failure triggered by out-of-bounds array access. There is no indication of privilege escalation, code execution, or data disclosure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, avoid processing untrusted ALSA configuration files with sparse bindings.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-23T15:10:29.016Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab3f4bef7a7c5410600a20f
Added to database: 09/23/2026, 15:48:14 UTC
Last enriched: 09/23/2026, 16:02:38 UTC
Last updated: 09/24/2026, 03:07:14 UTC
Views: 9
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.