In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix kfd_process_device_init_vm error handling

Should only destroy the ib_mem and let process cleanup worker to free
the outstanding BOs. Reset the pointer in pdd->qpd structure, to avoid
NULL pointer access in process destroy worker.

BUG: kernel NULL pointer dereference, address: 0000000000000010
Call Trace:
amdgpu_amdkfd_gpuvm_unmap_gtt_bo_from_kernel+0x46/0xb0 [amdgpu]
kfd_process_device_destroy_cwsr_dgpu+0x40/0x70 [amdgpu]
kfd_process_destroy_pdds+0x71/0x190 [amdgpu]
kfd_process_wq_release+0x2a2/0x3b0 [amdgpu]
process_one_work+0x2a1/0x600
worker_thread+0x39/0x3d0

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-50354
• https://git.kernel.org/stable/c/29d48b87db64b6697ddad007548e51d032081c59
• https://git.kernel.org/stable/c/9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9
• https://git.kernel.org/stable/c/b6e78bd3bf2eb964c95eb2596d3cd367307a20b5