4.4Medium
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.
What this means for your business
- An attacker can use it only with access to the machine itself, with an ordinary user login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
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Scoring
- CVSS
- 4.4 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L- CVSS v4
- 4.8
- Weakness
- CWE-193
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-09-13
- Last modified
- 2026-09-16
- Sources
- NVD
References
- https://github.com/alsa-project/alsa-lib
- https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/control/ctlparse.c#L216-L241
- https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c091d27020
- https://lore.kernel.org/alsa-devel/CACBQ=P2FhO3M6dkv3cWuKb6Qhs92ouV+FJ3SJZ_PVBSSdJWRAQ@mail.gmail.com/
- https://www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-off-by-one-stack-buffer-overflow-in-snd-ctl-ascii-elem-id-parse