Linux Kernel Granularity Check Vulnerability in AMD Display Component

A vulnerability in the Linux kernel's AMD display component was addressed by adding a granularity check in certain helper functions. This vulnerability could lead to an assertion failure and a divide-by-zero error. The issue arose because the wrapper functions for bandwidth ceiling and flooring calculations did not verify that the granularity was non-zero, potentially causing a runtime error.

Impact

The vulnerability could cause a divide-by-zero error, leading to a crash or undefined behavior in the affected component.