Linux Kernel Vulnerability Affecting LoongArch Architecture

CVE-2025-38195

What is CVE-2025-38195?

A vulnerability has been identified in the Linux kernel related to the LoongArch architecture, where a NULL-PMD can lead to system instability. This issue causes a panic when the kernel attempts to handle paging requests at a virtual address of 0x0, resulting in system crashes. This vulnerability highlights the necessity for validating pointers during memory management operations to prevent unexpected errors. The resolution implements critical checks that ensure the PMD is not NULL, mitigating the risk of these paging requests. System administrators are urged to apply the latest patches to safeguard against potential exploitation.

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