# CVE-2026-90781

## Summary

- **CVE ID:** CVE-2026-90781
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (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)
- **CWE:** CWE-193
- **Published:** Sep 13, 2026
- **Last Modified:** Sep 16, 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.

## Affected Products

- ALSA Project — alsa-lib (0)
- ALSA Project — alsa-lib (f84cd4ced7b36fddb8e4ee24404cf7c091d27020)

## References

- [CNA](https://github.com/alsa-project/alsa-lib/commit/f84cd4ced7b36fddb8e4ee24404cf7c091d27020)
- [CNA](https://github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/control/ctlparse.c#L216-L241)
- [CNA](https://lore.kernel.org/alsa-devel/CACBQ=P2FhO3M6dkv3cWuKb6Qhs92ouV+FJ3SJZ_PVBSSdJWRAQ@mail.gmail.com/)
- [CNA](https://github.com/alsa-project/alsa-lib)
- [CNA](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)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._