Linux Kernel Blk-Throttle Wait Time Calculation Overflow Vulnerability

A vulnerability in the Linux kernel's block throttling mechanism could lead to an overflow in the calculation of wait times. This issue arises in the function 'tg_with_in_bps_limit()', where the product of 'bps_limit' and 'jiffy_elapsed_rnd' may exceed the maximum value representable, causing incorrect wait time calculations. The vulnerability affects the Linux kernel stable tree.

Impact

The vulnerability could lead to incorrect throttling behavior, potentially allowing processes to bypass intended I/O limits.

Remediation

Users can upgrade to the latest version of the Linux kernel stable tree to address this vulnerability.