CVE-2021-47362 (GCVE-0-2021-47362)
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2025-12-18 11:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: Update intermediate power state for SI Update the current state as boot state during dpm initialization. During the subsequent initialization, set_power_state gets called to transition to the final power state. set_power_state refers to values from the current state and without current state populated, it could result in NULL pointer dereference. For ex: on platforms where PCI speed change is supported through ACPI ATCS method, the link speed of current state needs to be queried before deciding on changing to final power state's link speed. The logic to query ATCS-support was broken on certain platforms. The issue became visible when broken ATCS-support logic got fixed with commit f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)"). Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1698
References
Impacted products
Vendor Product Version
Linux Linux Version: 2ab4d0e74256fc49b7b270f63c1d1e47c2455abc
Version: 2ab4d0e74256fc49b7b270f63c1d1e47c2455abc
Version: 2ab4d0e74256fc49b7b270f63c1d1e47c2455abc
Version: 2c83e77a3e35dc91350cea077d1aaefdc0a61297
Version: 46cb720a8a3ece894eff4e1b85b3925efb71afd2
Version: 65c96da9c684946d0874bf911fdb50a3b497cb30
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