In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid DPMS-on for phantom stream [Why & How] Calling dc_update_planes_and_stream separately for stream and its phantom stream causes a NULL pointer dereference, since the phantom is destroyed on the first call. Skip the call for phantom streams.
https://git.kernel.org/stable/c/f2463fc246d3c39be1371389c52b29418ad673d0
https://git.kernel.org/stable/c/10f5f9c0ef32d08b228bfee3684b62f36f395852