Linux Kernel SPI Rockchip Out-of-Bounds Register Access Vulnerability

A vulnerability in the Linux kernel's SPI Rockchip implementation allowed for out-of-bounds access to registers. This issue arose because the native chip select handling was incorrectly applied to GPIO chip selects, which can be assigned higher numbers than the native chip select values. The vulnerability has been addressed by correcting this register access issue.

Impact

Exploitation of this vulnerability could lead to out-of-bounds memory access, potentially causing undefined behavior such as memory corruption or arbitrary code execution.