High7.0Red Hat Linux

High [CVE-2026-46189] Fix double free on pvrdma_alloc_ucontext() error path

This high-severity Red Hat Linux advisory covers CVE-2026-46189 affecting Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux AppStream E4S (v.9.4).

CVE-2026-46189 Published May 28, 2026

CVE-2026-46189

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Fix double free on pvrdma_alloc_ucontext() error path. Red Hat rates this important (CVSS 7).

Weakness: CWE-1341. Affected package(s): kernel.

Resolved in Red Hat advisory RHSA-2026:30848 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream E4S (v.9.2); Red Hat Enterprise Linux AppStream E4S (v.9.4); Red Hat Enterprise Linux AppStream EUS (v.9.6); and 34 more.

Affected versions

kernel-0:4.18.0-553.139.1.el8_10
kernel-0:6.12.0-211.29.1.el10_2
kernel-0:5.14.0-687.19.1.el9_8

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

Fixed versions

RHSA-2026:30848

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-2026:30848 (`sudo dnf update` / `yum update`).

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

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