Linux Kernel TH1520 Mailbox Memory Corruption Vulnerability

A memory corruption vulnerability has been identified in the Linux kernel's mailbox implementation for the TH1520 platform. The issue arises in the functions responsible for suspending and resuming interrupt mask registers, where the array designated to store these registers was improperly sized. This miscalculation led to memory corruption by overwriting data when accessing all four interrupt mask registers. The vulnerability has been addressed by resizing the array to correctly accommodate all registers, thereby preventing memory corruption during the suspend and resume processes.

Impact

Exploitation of this vulnerability could lead to memory corruption, potentially allowing for arbitrary code execution or causing a denial-of-service condition by crashing the system.