CVE-2026-46090
HIGHCVSS v3.1: 7.8 · EPSS: 0.0013 (2.8 percentile)
Source data as of:
At a glance
- Severity
- HIGH
- CVSS
- 7.8 v3.1 · NVD
- EPSS
- 0.0013 (2.8 percentile) · FIRST.org
- CISA KEV
- No
- Attack conditions (CVSS vector)
- No user interaction · Source: NVD Vector
- Published
- 2026-05-27 · Modified: 2026-06-19
- References
- Jump to references (6)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix peer runtime UAF during format-change stop loopback_check_format() may stop the capture side when playback starts with parameters that no longer match a running capture stream. Commit 826af7fa62e3 ("ALSA: aloop: Fix racy access at PCM trigger") moved the peer lookup under cable->lock, but the actual snd_pcm_stop() still runs after dropping that lock. A concurrent close can clear the capture entry from cable->streams[] and detach or free its runtime while the playback trigger path still holds a stale peer substream pointer. Keep a per-cable count of in-flight peer stops before dropping cable->lock, and make free_cable() wait for those stops before detaching the runtime. This preserves the existing behavior while making the peer runtime lifetime explicit.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.
- Reference https://git.kernel.org/stable/c/03f52a9c170431e8f10e156b9dc0dae80b3e9198
- Reference https://git.kernel.org/stable/c/345c24b2bcf0923dfae1ab41497351c68214ff76
- Reference https://git.kernel.org/stable/c/5d45e34bf001344e2966dabca1897561bbc9e913
- Reference https://git.kernel.org/stable/c/83bd62fa9620ac98d5d694bde14c50f98c8e7189
- Reference https://git.kernel.org/stable/c/bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c
- Reference https://git.kernel.org/stable/c/e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff