Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amd: Fix NULL pointer dereference in device cleanup When GPU initialization fails due to an unsupported HW block IP blocks may have a NULL version pointer. During cleanup in amdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and amdgpu_device_set_cg_state which iterate over all IP blocks and access adev->ip_blocks[i].version without NULL checks, leading to a kernel NULL pointer dereference. Add NULL checks for adev->ip_blocks[i].version in both amdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent dereferencing NULL pointers during GPU teardown when initialization has failed. (cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fc58ef30e0a1524ce72a8e873d773ba3b0830c7d before 43025c941aced9a9009f9ff20eea4eb78c61deb8; affected 6d7ac4a0ebb6b7bc885274aa8b2bd9971f07013c before 767cd24d3c4ae847688877def4891943f6611ecd; affected 39fc2bc4da0082c226cbee331f0a5d44db3997da before 062ea905fff7756b2e87143ffccaece5cdb44267 |
| Linux / Linux | affected 6.18.16 before 6.18.19; affected 6.19.6 before 6.19.9 |
CWE
No CWE identifiers supplied.