Medium6.3Red Hat Linux

Medium [CVE-2026-31581] fix use-after-free on disconnect

This medium-severity Red Hat Linux advisory covers CVE-2026-31581 affecting Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

CVE-2026-31581 Published Apr 24, 2026

CVE-2026-31581

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

fix use-after-free on disconnect. Red Hat rates this moderate (CVSS 6.3).

Weakness: CWE-825. Affected package(s): kernel, kernel-rt.

Resolved in Red Hat advisory RHSA-2026:25120 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.

Affected versions

kernel-0:6.12.0-211.22.1.el10_2
kernel-rt-0:4.18.0-553.132.1.rt7.473.el8_10
kernel-0:4.18.0-553.132.1.el8_10
kernel-0:5.14.0-687.15.1.el9_8

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:25120

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:25120 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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