Linux Kernel Out-of-Bounds Array Access Vulnerability in ARM64 MOPS Handling

A vulnerability in the Linux kernel's ARM64 architecture has been addressed, concerning the handling of the MOPS exception. The issue arises during SET* operations when the source register is XZR (register 31), leading to a potential out-of-bounds array access error. This vulnerability was introduced in a specific commit, where the normal safeguard against such access was removed.

Impact

Exploitation of this vulnerability could lead to a out-of-bounds array access, potentially causing undefined behavior or memory corruption.