CVE-2026-53192: ALSA: timer: Fix UAF at snd_timer_user_params()

highCVSS 7CVE-2026-53192

CSIRTS triage

Other

What: A use-after-free vulnerability exists at snd_timer_user_params() in ALSA.
Who is affected: Deployments using ALSA are affected.
Urgency: Remediation is urgent due to the high severity and potential for exploitation.
Action: Apply the relevant patches for the affected systems.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53192

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-531920.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53192	coverage & exploitation status	NVD · CVE.org

Recent advisories for ALSA

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-53291: In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/conexant: Fix mi…nvd · 2026-06-26
mediumCVE-2026-52963: ALSA: usb-audio: Bound MIDI endpoint descriptor scansmsrc · 2026-06-09
highCVE-2026-53242: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streamsmsrc · 2026-06-09
mediumCVE-2026-52964: ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scansmsrc · 2026-06-09
mediumCVE-2026-53291: ALSA: hda/conexant: Fix missing error check for jack detectionmsrc · 2026-06-09