Riskcovery

CVE-2022-49426

iommu/arm-smmu-v3-sva: Fix mm use-after-free

State
Published
Severity
7.8 High
Published
Feb 26, 2025
Updated
Aug 5, 2026
Reserved
Feb 26, 2025

Read the record on cve.org

Description

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

iommu/arm-smmu-v3-sva: Fix mm use-after-free

We currently call arm64_mm_context_put() without holding a reference to the mm, which can result in use-after-free. Call mmgrab()/mmdrop() to ensure the mm only gets freed after we unpinned the ASID.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 32784a9562fb0518b12e9797ee2aec52214adf6f to before fc90f13ea0dcd960e5002d204fa55cec4e0db2faAffected
  • 32784a9562fb0518b12e9797ee2aec52214adf6f to before e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0Affected
  • 32784a9562fb0518b12e9797ee2aec52214adf6f to before 9aa215450888cf29af0c479e14a712dc6b0c506cAffected
  • 32784a9562fb0518b12e9797ee2aec52214adf6f to before cbd23144f7662b00bcde32a938c4a4057e476d68Affected
LinuxLinux
  • 5.11Affected
  • before 5.11Not affected
  • 5.15.46 through 5.15.*Not affected
  • 5.17.14 through 5.17.*Not affected
  • 5.18.3 through 5.18.*Not affected
  • 5.19 and laterNot affected

References

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