Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/alsa-project/alsa-lib
- https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/control/ctlparse.c#L
- https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c0
- https://lore.kernel.org/alsa-devel/CACBQ=P2FhO3M6dkv3cWuKb6Qhs92ouV+FJ3SJZ_PVBSS
- https://www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-off-by-one-stack-
FAQ
What is CVE-2026-90781?
CVE-2026-90781 is a vulnerability with a CVSS score of 4.4 (MEDIUM). 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 charact...
How severe is CVE-2026-90781?
CVE-2026-90781 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-90781?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.