CVE-2026-53242: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams

highCVSS 7CVE-2026-53242

CSIRTS triage

product: ALSAOther

What: There is a wait queue list corruption issue in snd_pcm_drain() on linked streams.
Who is affected: Systems utilizing ALSA for audio processing.
Urgency: Remediation is high urgency due to the high severity rating, although exploitation has not been confirmed.
Action: Apply the latest patches for ALSA to resolve this issue.

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

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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-2026-53242

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-2026-532420.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53242	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiple vulnerabilities in Microsoft Azure Linux (June 29, 2026)cert-fr-avis

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
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