CVE-2026-43369drm/amd: Fix NULL pointer dereference in device cleanup

Official 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 packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8
• https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd
• https://git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267