drm/amd: Fix NULL pointer dereference in device cleanup

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Summary

CVECVE-2026-43369
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:47 UTC
Updated2026-05-12 14:10:27 UTC
DescriptionIn 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)

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.041320000 (date 2026-05-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected fc58ef30e0a1524ce72a8e873d773ba3b0830c7d 43025c941aced9a9009f9ff20eea4eb78c61deb8 git Not specified
CNA Linux Linux affected 6d7ac4a0ebb6b7bc885274aa8b2bd9971f07013c 767cd24d3c4ae847688877def4891943f6611ecd git Not specified
CNA Linux Linux affected 39fc2bc4da0082c226cbee331f0a5d44db3997da 062ea905fff7756b2e87143ffccaece5cdb44267 git Not specified
CNA Linux Linux affected 6.18.16 6.18.19 semver Not specified
CNA Linux Linux affected 6.19.6 6.19.9 semver Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/062ea905fff7756b2e87143ffccaece5cdb44267 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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