Linux Kernel LoongArch Vulnerability in Memory Management

CVE-2023-53361

What is CVE-2023-53361?

A significant vulnerability affecting the memory management subsystem of the Linux kernel on the LoongArch architecture has been identified and resolved. The issue arose from the absence of pmd_leaf() definitions, which led to system panics during LTP (Linux Test Project) testing, specifically when executing test case ksm06. This instability, originating from the handling of huge page tables, necessitated the implementation of pmd_leaf() definitions to ensure proper memory management operations. The resolution enhances system stability and reliability for environments utilizing the LoongArch architecture.

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