Race Condition Affecting torvalds/linux package, versions [,5.19-rc8)


Severity

Recommended
0.0
low
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.22% (12th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3014223
  • published2 Sept 2022
  • disclosed2 Sept 2022
  • creditJann Horn

Introduced: 2 Sep 2022

CVE-2022-39188  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.19-rc8 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition in include/asm-generic/tlb.h, between happens unmap_mapping_range to munmap. This behavior causes a device driver to free a page while it still has stale TLB entries.

Note: This only occurs in situations with VM_PFNMAP VMAs.

CVSS Base Scores

version 3.1