EUVD-2026-28675
GHSA-9m9h-79g2-4xrr
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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4DescriptionNVD
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)
AnalysisAI
A NULL pointer dereference in Linux kernel AMD GPU driver cleanup code causes local denial of service when GPU initialization fails on systems with unsupported AMD hardware blocks. Local authenticated users with low privileges can trigger kernel crashes during device teardown sequences. …
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