Stack Buffer Vulnerability in Linux Kernel Affecting RISC-V KVM

CVE-2025-39815

What is CVE-2025-39815?

A vulnerability in the Linux Kernel's handling of stack buffers for RISC-V KVM has been identified, allowing userspace loads to potentially exceed the allocated buffer size of xlen bits. This flaw could lead to stack overrun, compromising the integrity of the system. A fix has been implemented to perform size checks before loading data, preventing overflow and enhancing system stability.

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