CVE-2025-21956 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/amd/display: Assign normalized_pix_clk when color depth = 14

[WHY & HOW] A warning message \WARNING: CPU: 4 PID: 459 at … /dc_resource.c:3397 calculate_phy_pix_clks+0xef/0x100 [amdgpu]\ occurs because the display_color_depth == COLOR_DEPTH_141414 is not handled. This is observed in Radeon RX 6600 XT.

It is fixed by assigning pix_clk (14 3) / 24 - same as the rests.

Also fixes the indentation in get_norm_pix_clk.

(cherry picked from commit 274a87eb389f58eddcbc5659ab0b180b37e92775)

Reference

https://git.kernel.org/stable/c/04f90b505ad3a6eed474bbaa03167095fef5203a https://git.kernel.org/stable/c/27df30106690969f7d63604f0d49ed8e9bffa2cb https://git.kernel.org/stable/c/79e31396fdd7037c503e6add15af7cb00633ea92 https://git.kernel.org/stable/c/a8f77e1658d78e4a8bb227a83bcee67de97f7634 https://git.kernel.org/stable/c/dc831b38680c47d07e425871a9852109183895cf