Linux Kernel DSC eDP Issue Vulnerability in AMD Display Driver

A vulnerability related to Display Stream Compression (DSC) in Embedded DisplayPort (eDP) has been addressed in the Linux kernel. The issue arose because function hook checks were missing before certain operations were performed, which could potentially lead to improper handling of DSC features. This vulnerability was present in the AMD display driver for the Linux kernel.

Impact

The vulnerability could have led to incorrect management of DSC in eDP, potentially causing display issues or improper handling of video data.

Reproduction

The vulnerability could be reproduced by using an affected version of the Linux kernel with an AMD graphics driver that manages DSC over eDP. The issue would manifest as improper handling of DSC features, which could be observed by monitoring the display performance or video data management.

Remediation

Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. The specific commit addressing this issue is available in the Linux kernel stable tree.