CVE-2026-74614: vsock/virtio: read virtqueues under worker locks

CSIRTS triage

What

vsock/virtio device reads virtqueues without acquiring worker locks, risking race conditions.

Who is affected

Linux systems using vsock virtual sockets with virtio transport.

Urgency

Moderate; CVSS 4.7 and race condition potential warrant timely remediation.

Action

Apply kernel patch or upgrade to a Linux version with vsock worker lock fix.

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

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

medium — CVSS 4.7

Published

2026-08-11

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-74614

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-2026-746140.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• medium[NEW] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attackcert-bund
• highCVE-2026-74614: In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: read virtque…nvd

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