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CVE-2026-53112: wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet

mediumCVSS 4.7CVE-2026-53112

CSIRTS triage

vendor: Linuxproduct: kernelOther
What
A use-after-free vulnerability may occur in the rtlwifi driver due to unfinished IRQ preparation tasks.
Who is affected
Deployments of the Linux kernel using the rtlwifi driver.
Urgency
Remediation is medium urgency as the severity is moderate and exploitation is not currently reported.
Action
Update the kernel to a version that includes the fix.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 4.7
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53112

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-2026-53112coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for wifi

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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