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  4. CVE 2026 90781 alsa lib through 12161 off by one stack buffer
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Back to active CVEs
Medium · CVSS 4.8CVE-2026-90781

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

Answer in brief

CVE-2026-90781 records a Medium severity (CVSS 4.8) vulnerability in alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse(). The current sources do not mark it as known exploited. The current feed maps ALSA Project/alsa-lib (generic), ALSA Project/alsa-lib (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 13, 2026Updated Sep 24, 2026Source checked Oct 28, 2026First seen by HOL Sep 13, 2026Material review Sep 24, 2026
Upstream Advisory

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-193
Source
CVE List V5
Source checked
Oct 28, 2026
References
5 linked sources
Open source record

Key facts

Risk
Medium · CVSS 4.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 4.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ALSA Project/alsa-lib (generic), ALSA Project/alsa-lib (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ALSA Project/alsa-libgeneric>=0 <=1.2.16.1Not reported
ALSA Project/alsa-libgeneric0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ALSA Project/alsa-lib, ALSA Project/alsa-lib.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 13, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 13, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencelore.kernel.org
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.