Linux Kernel dm Crypt Unbounded Loop Denial-of-Service Vulnerability

A denial-of-service vulnerability has been identified in the Linux kernel's dm crypt module. The issue arises in the 'dmcrypt_write' function, which may execute for an unbounded duration, potentially leading to a soft lockup. This vulnerability has been addressed by adding a 'cond_resched()' call to the function, allowing for better task scheduling and preventing the CPU from being stuck for extended periods.

Impact

Exploitation of this vulnerability can cause a soft lockup, where a CPU core becomes unresponsive for a significant duration, disrupting normal system operations.