CVE-2026-90781
alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse()
- State
- Published
- Severity
- 4.8 Medium
- Published
- Sep 13, 2026
- Updated
- Sep 16, 2026
- Reserved
- Sep 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.4 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L | VulnCheck |
Weaknesses
- CWE-193 Off-by-one Error
Affected Products
| Product | Versions |
|---|---|
alsa-libALSA Project |
|
References
- Patch Commitpatch
- Vulnerable name= parsing loops in __snd_ctl_ascii_elem_id_parse() at v1.2.16.1technical-description
- alsa-devel report threadmailing-list
- https://github.com/alsa-project/alsa-libproduct
- VulnCheck Advisory: alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse()third-party-advisory
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