CVE-2026-53401: fbdev: omap2: fix use-after-free in omapfb_mmap

CSIRTS triage

What

There is a use-after-free vulnerability in omapfb_mmap that can lead to crashes.

Who is affected

Deployments using fbdev on OMAP2 devices.

Urgency

Remediation is necessary as the severity is unknown and exploitation is not confirmed.

Action

Apply the patch for CVE-2026-53401.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

Microsoft Security Response Center (INTL · vendor-psirt · site)

Severity

high — CVSS 7

Published

2026-07-14

Exploitation

Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53401

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-2026-534010.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• medium[NEW] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attackcert-bund
• highCVE-2026-53401: In the Linux kernel, the following vulnerability has been resolved: fbdev: omap2: fix use-afte…nvd

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