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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-52485

drm/amd/display: Wake DMCUB before sending a command

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 65138eb72e1fc687be49932b9a45325598ffa01c to < 303197775a97416b62d4da69280d0c120a20e009affected
  • 65138eb72e1fc687be49932b9a45325598ffa01c to < 8892780834ae294bc3697c7d0e056d7743900b39affected

Linux Linux

Default version status: affected

  • 6.7affected
  • 0 to < 6.7unaffected
  • 6.7.3 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References