CVE-2022-49426 Information

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.

Reference

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