CVE-2022-49562 Affecting python3-perf package, versions <0:5.14.0-284.11.1.el9_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-RHEL9-PYTHON3PERF-10555950
  • published27 Jun 2025
  • disclosed26 Feb 2025

Introduced: 26 Feb 2025

CVE-2022-49562  (opens in a new tab)

How to fix?

Upgrade RHEL:9 python3-perf to version 0:5.14.0-284.11.1.el9_2 or higher.
This issue was patched in RHSA-2023:2458.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-perf package and not the python3-perf package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

Use the recently introduced __try_cmpxchg_user() to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VM_PFNMAP path is broken as it assumes that vm_pgoff is the base pfn of the mapped VMA range, which is conceptually wrong as vm_pgoff is the offset relative to the file and has nothing to do with the pfn. The horrific hack worked for the original use case (backing guest memory with /dev/mem), but leads to accessing "random" pfns for pretty much any other VM_PFNMAP case.

CVSS Base Scores

version 3.1