cve-2023-52485
Vulnerability from cvelistv5
Published
2024-02-29 14:57
Modified
2024-12-19 08:20
Severity ?
EPSS score ?
0.07% (0.19239)
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Wake DMCUB before sending a command [Why] We can hang in place trying to send commands when the DMCUB isn't powered on. [How] For functions that execute within a DC context or DC lock we can wrap the direct calls to dm_execute_dmub_cmd/list with code that exits idle power optimizations and reallows once we're done with the command submission on success. For DM direct submissions the DM will need to manage the enter/exit sequencing manually. We cannot invoke a DMCUB command directly within the DM execution helper or we can deadlock.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/303197775a97416b62d4da69280d0c120a20e009Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8892780834ae294bc3697c7d0e056d7743900b39Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/303197775a97416b62d4da69280d0c120a20e009Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8892780834ae294bc3697c7d0e056d7743900b39Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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}


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