Compliance Impact

The provided information does not include any details about the impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Executive Summary

This vulnerability occurs in the Linux kernel's AMD GPU driver during device cleanup after a failed GPU initialization.

When GPU initialization fails because of an unsupported hardware block, some IP blocks may have a NULL version pointer.

During cleanup, the code calls functions that iterate over all IP blocks and access their version pointers without checking if they are NULL.

This leads to a NULL pointer dereference in the kernel, which can cause a crash or instability.

The fix involves adding NULL checks before accessing these version pointers to prevent dereferencing NULL pointers during GPU teardown.

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Impact Analysis

This vulnerability can cause the Linux kernel to dereference a NULL pointer during GPU device cleanup, potentially leading to a kernel crash or system instability.

Such crashes can result in denial of service, requiring a system reboot and possibly causing data loss or disruption of services.

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Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the NULL pointer dereference in the drm/amd driver.

The fix adds NULL checks for the version pointer in amdgpu_device_set_cg_state and amdgpu_device_set_pg_state functions to prevent kernel crashes during GPU teardown when initialization fails.

Applying the patch or upgrading to a kernel version containing the commit b7ac77468cda92eecae560b05f62f997a12fe2f2 will address this issue.

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