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CVE-2026-31688: driver core: enforce device_lock for driver_match_device()

highCVSS 7.8CVE-2026-31688

CSIRTS triage

vendor: Linuxproduct: kernelOther
What
The driver core does not properly enforce device_lock for driver_match_device(), potentially allowing concurrent access issues.
Who is affected
Linux kernel deployments using affected driver matching logic.
Urgency
High severity (CVSS 7.8) and not currently exploited; remediation is needed but not emergency.
Action
Apply kernel patches addressing driver_lock enforcement in the driver core subsystem.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.8
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-31688

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-31688coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for driver core

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.

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