Linux Kernel Use-After-Free Vulnerability in IOMMU ARM-SMMU-V3-SVA

A use-after-free vulnerability has been identified in the Linux kernel's IOMMU ARM-SMMU-V3-SVA implementation. The issue arises because the function 'arm64_mm_context_put()' is called without a proper reference to the memory management structure (mm), leading to a potential use-after-free condition. This vulnerability can be exploited by manipulating the memory management references, causing unintended behavior or memory access errors.

Impact

Exploitation of this vulnerability can lead to a use-after-free condition, which may be exploited to execute arbitrary code or cause a denial-of-service by crashing the system.