Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
fc58ef30e0a1524ce72a8e873d773ba3b0830c7d to < 43025c941aced9a9009f9ff20eea4eb78c61deb8affected6d7ac4a0ebb6b7bc885274aa8b2bd9971f07013c to < 767cd24d3c4ae847688877def4891943f6611ecdaffected39fc2bc4da0082c226cbee331f0a5d44db3997da to < 062ea905fff7756b2e87143ffccaece5cdb44267affected
Linux Linux
Default version status: unaffected
6.18.16 to < 6.18.19affected6.19.6 to < 6.19.9affected