CVE-2024-26667 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup

The commit 8b45a26f2ba9 (\drm/msm/dpu: reserve cdm blocks for writeback in case of YUV output) introduced a smatch warning about another conditional block in dpu_encoder_helper_phys_cleanup() which had assumed hw_pp will always be valid which may not necessarily be true.

Lets fix the other conditional block by making sure hw_pp is valid before dereferencing it.

Patchwork: https://patchwork.freedesktop.org/patch/574878/

Reference

https://git.kernel.org/stable/c/fb8bfc6ea3cd8c5ac3d35711d064e2f6646aec17 https://git.kernel.org/stable/c/79592a6e7bdc1d05460c95f891f5e5263a107af8 https://git.kernel.org/stable/c/eb4f56f3ff5799ca754ae6d811803a63fe25a4a2 https://git.kernel.org/stable/c/7f3d03c48b1eb6bc45ab20ca98b8b11be25f9f52