CVE-2026-64424: netpoll: fix a use-after-free on shutdown path

mediumCVSS 4.1CVE-2026-64424

CSIRTS triage

vendor: Linux product: netpollOther

What: This vulnerability addresses a use-after-free condition on the shutdown path.
Who is affected: Deployments using the netpoll feature.
Urgency: Remediation is important to prevent potential crashes, although no exploitation has been reported.
Action: Apply the patch for CVE-2026-64424.

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 4.1
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64424

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-2026-644240.17% 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-2026-64424	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for netpoll

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-2026-64424: In the Linux kernel, the following vulnerability has been resolved: netpoll: fix a use-after-f…nvd · 2026-07-25