CVE-2023-52485 (GCVE-0-2023-52485)

Vulnerability from cvelistv5 – Published: 2024-02-29 14:57 – Updated: 2026-05-11 19:28
VLAI?
Title
drm/amd/display: Wake DMCUB before sending a command
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 303197775a97416b62d4da69280d0c120a20e009 (git)
Affected: 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c , < 8892780834ae294bc3697c7d0e056d7743900b39 (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 6.7.3 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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\"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/core/dc.c\", \"drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.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/dc_helper.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_outbox.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c\", \"drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c\", \"drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c\", \"drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c\", \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c\", \"drivers/gpu/drm/amd/display/dc/bios/command_table2.c\", \"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn316/dcn316_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c\", \"drivers/gpu/drm/amd/display/dc/core/dc.c\", \"drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.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/dc_helper.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_outbox.c\", \"drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c\", \"drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c\", \"drivers/gpu/drm/amd/display/dc/dcn31/dcn31_dio_link_encoder.c\", \"drivers/gpu/drm/amd/display/dc/dcn31/dcn31_panel_cntl.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c\", \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c\", \"drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/303197775a97416b62d4da69280d0c120a20e009\"}, {\"url\": \"https://git.kernel.org/stable/c/8892780834ae294bc3697c7d0e056d7743900b39\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Wake DMCUB before sending a command\\n\\n[Why]\\nWe can hang in place trying to send commands when the DMCUB isn\u0027t\\npowered on.\\n\\n[How]\\nFor functions that execute within a DC context or DC lock we can\\nwrap the direct calls to dm_execute_dmub_cmd/list with code that\\nexits idle power optimizations and reallows once we\u0027re done with\\nthe command submission on success.\\n\\nFor DM direct submissions the DM will need to manage the enter/exit\\nsequencing manually.\\n\\nWe cannot invoke a DMCUB command directly within the DM execution\\nhelper or we can deadlock.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.3\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"4.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-07-11T17:19:29.282Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52485\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-11T17:19:29.282Z\", \"dateReserved\": \"2024-02-20T12:30:33.301Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T14:57:51.179Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.