CVE-2022-50354

Summary

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

Affected Software

VendorProductVersion RangeStatus
LinuxLinux68df0f195a689bbb0f92bfeadee6edd90c79c31f < b6e78bd3bf2eb964c95eb2596d3cd367307a20b5affected
LinuxLinux68df0f195a689bbb0f92bfeadee6edd90c79c31f < 9d74d1f52e16d8e07f7fbe52e96d6391418a2fe9affected
LinuxLinux68df0f195a689bbb0f92bfeadee6edd90c79c31f < 29d48b87db64b6697ddad007548e51d032081c59affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.0.19 <= 6.0.*unaffected
LinuxLinux6.1.5 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References