CVE-2025-21956

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

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)

N/A

CVSS

Severity:

EPSS 0.06%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/cca3ab74f90176099b6392e8e894b52b27b3d080
https://git.kernel.org/stable/c/0174a2e5770efee9dbd4b58963ed4d939298ff5e
https://git.kernel.org/stable/c/0c0016712e5dc23ce4a7e673cbebc24a535d8c8a
https://git.kernel.org/stable/c/dc831b38680c47d07e425871a9852109183895cf
https://git.kernel.org/stable/c/a8f77e1658d78e4a8bb227a83bcee67de97f7634
https://git.kernel.org/stable/c/04f90b505ad3a6eed474bbaa03167095fef5203a
https://git.kernel.org/stable/c/27df30106690969f7d63604f0d49ed8e9bffa2cb
https://git.kernel.org/stable/c/79e31396fdd7037c503e6add15af7cb00633ea92

Frequently Asked Questions

What is the severity of CVE-2025-21956?: CVE-2025-21956 has not yet been assigned a CVSS score.
How to fix CVE-2025-21956?: To fix CVE-2025-21956, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21956 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21956 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21956?: CVE-2025-21956 affects Linux Linux, Linux Linux.

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