Linux Kernel Memory Corruption Vulnerability in MD RAID Module

A use-after-free vulnerability has been identified in the Linux kernel's MD RAID module. This issue arises when the 'all_mddevs' list is iterated without proper synchronization, allowing a race condition to occur. Specifically, while one thread is processing a metadata device, another thread can remove it from the list, leading to a use-after-free scenario. The vulnerability affects several versions of the Linux kernel.

Impact

Exploitation of this vulnerability can lead to memory corruption, potentially allowing for arbitrary code execution or causing a system crash.