CVE-2023-52624 drm/amd/display: Wake DMCUB before executing GPINT commands

2024-03-2617:49:58

Linux

www.cve.org

linux kernel

amd display

dmcub wake

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Wake DMCUB before executing GPINT commands

[Why]
DMCUB can be in idle when we attempt to interface with the HW through
the GPINT mailbox resulting in a system hang.

[How]
Add dc_wake_and_execute_gpint() to wrap the wake, execute, sleep
sequence.

If the GPINT executes successfully then DMCUB will be put back into
sleep after the optional response is returned.

It functions similar to the inbox command interface.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c",
      "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c",
      "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h",
      "drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "2ef98c6d753a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "e5ffd1263dd5",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c",
      "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c",
      "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h",
      "drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c"
    ],
    "versions": [
      {
        "version": "6.7.3",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]