Use After Free Affecting kernel-debug-core package, versions <0:5.14.0-70.70.1.el9_0


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELDEBUGCORE-5871667
  • published27 Sept 2022
  • disclosed6 Jul 2022

Introduced: 6 Jul 2022

CVE-2022-39188  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-debug-core to version 0:5.14.0-70.70.1.el9_0 or higher.
This issue was patched in RHSA-2023:4801.

NVD Description

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

An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.

CVSS Scores

version 3.1