CVE-2022-49426

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

CVSS 7.8 HIGHEPSS 0.3%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

26 Feb 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68 https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0 https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa