Improper Logging in Linux Kernel for AMD Graphics Driver

CVE-2026-80704

What is CVE-2026-80704?

A vulnerability exists in the Linux kernel related to improper context usage for logging within the AMD display driver. The function get_ss_info_from_atombios() inadvertently accesses an uninitialized logging context, resulting in a NULL pointer dereference. This issue also affects other related functions, including dce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers(). To resolve these issues, the logging context must be correctly referenced from clk_src->base.ctx instead of the later-initialized context in calc_pll_cs. This change ensures that logging calls do not lead to application crashes due to null pointer access.

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