CVE-2025-38584: padata: Fix pd UAF once and for all

highCVSS 7.8CVE-2025-38584

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: A use-after-free vulnerability in the padata (parallel data) subsystem allows access to freed memory.
Who is affected: Systems running Linux kernel with padata enabled or in use by crypto or compression workloads.
Urgency: High; use-after-free conditions can lead to denial of service or potential privilege escalation.
Action: Update to a patched Linux kernel version addressing CVE-2025-38584.

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 7.8
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-38584

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-2025-385840.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-38584	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
unknownDebian Linux Kernel Multiple Vulnerabilitieshkcert

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
mediumCVE-2026-53314: padata: Put CPU offline callback in ONLINE section to allow failuremsrc · 2026-06-09