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Use After Free Affecting kernel-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% (15th percentile)

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  • Snyk ID SNYK-RHEL9-KERNELCORE-5871509
  • published 27 Sep 2022
  • disclosed 6 Jul 2022
Report a new vulnerability Found a mistake?

Introduced: 6 Jul 2022

CVE-2022-39188 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade RHEL:9 kernel-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-core package and not the kernel-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
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NVD

4.7 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

4.7 medium
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SUSE

7 high