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)
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 6.18.16 | 6.18.19 |
| linux / linux_kernel | 6.19.6 | 6.19.9 |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
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