vulnerability

Red Hat: CVE-2022-42703: use-after-free related to leaf anon_vma double reuse (Multiple Advisories)

Name: Red Hat: CVE-2022-42703: use-after-free related to leaf anon_vma double reuse (Multiple Advisories)
Creator: Red Hat
Published: 2022-10-09T00:00:00.000Z
Keywords: CVE, CWE-416, Red Hat, 2022, 42703, use, redhat-upgrade-kernel, redhat-upgrade-kernel-rt, Severity 5

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Severity

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

Oct 9, 2022

Added

Mar 8, 2023

Modified

Jun 12, 2026

Description

A memory leak flaw with use-after-free capability was found in the Linux kernel. The VMA mm/rmap.c functionality in the is_mergeable_anon_vma() function continuously forks, using memory operations to trigger an incorrect reuse of leaf anon_vma. This issue allows a local attacker to crash the system.

Solutions

redhat-upgrade-kernelredhat-upgrade-kernel-rt

References

Rapid7 Labs

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