CVE-2026-53314: padata: Put CPU offline callback in ONLINE section to allow failure

mediumCVSS 5.5CVE-2026-53314

CSIRTS triage

Other

What: CPU offline callback needs to be placed in the ONLINE section to allow failure.
Who is affected: Users of the affected padata functionality are affected.
Urgency: Remediation is medium due to the potential for system issues.
Action: Apply the recommended patches or updates.

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 5.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53314

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-2026-533140.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53314	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 (July 10, 2026)cert-fr-avis
medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
unknownCVE-2026-53314: In the Linux kernel, the following vulnerability has been resolved: padata: Put CPU offline ca…nvd

Recent advisories for padata

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-2026-53314: In the Linux kernel, the following vulnerability has been resolved: padata: Put CPU offline ca…nvd · 2026-06-26