In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Dereference null return value In the function pqm_uninit there is a call-assignment of "pdd = kfd_get_process_device_data" which could be null, and this value was later dereferenced without checking.
https://git.kernel.org/stable/c/a592bb19abdc2072875c87da606461bfd7821b08
https://git.kernel.org/stable/c/768442d918932c4da09003f1fd6be1750b93a4ba