Null Pointer Dereference in AMD Display Driver for Linux Kernel

CVE-2025-39705

What is CVE-2025-39705?

A vulnerability in the AMD display driver's cleanup function, dc_destruct(), can lead to a null pointer dereference. When the construction of the display control context fails due to memory allocation issues, the resulting NULL pointer can cause instability. Upon subsequent error handling when dc_destruct() is executed, lack of a proper NULL check before dereferencing the perf_trace member leads to crashes. This vulnerability highlights the importance of thorough error handling to prevent system crashes and maintain kernel stability.

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