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CVE-2026-64373: cpufreq: Fix hotplug-suspend race during reboot

mediumCVSS 4.7CVE-2026-64373

CSIRTS triage

vendor: nullproduct: nullOther
What
A hotplug-suspend race during reboot has been fixed in the cpufreq subsystem.
Who is affected
Deployments using cpufreq are affected.
Urgency
Remediation is necessary to ensure proper functionality, although exploitation status is currently unknown.
Action
Implement the fix for CVE-2026-64373.

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
medium — CVSS 4.7
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64373

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-64373coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for cpufreq

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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