Vulnerability in Alsa Project Alsa-Lib
CVE-2026-90781
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.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (mailing-list)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90781?
- CVE-2026-90781 is a medium-severity vulnerability in Alsa Project Alsa-Lib, classified under Off-by-one Error. CVSS score: 4.4/10. Published 2026-09-13.
- How severe is CVE-2026-90781?
- Medium severity. CVSS v3 base score is 4.4 out of 10.