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CVE-2024-26729 (GCVE-0-2024-26729)

Vulnerability from cvelistv5 – Published: 2024-04-03 17:00 – Updated: 2026-05-11 20:03
VLAI
Title
drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv Fixes potential null pointer dereference warnings in the dc_dmub_srv_cmd_list_queue_execute() and dc_dmub_srv_is_hw_pwr_up() functions. In both functions, the 'dc_dmub_srv' variable was being dereferenced before it was checked for null. This could lead to a null pointer dereference if 'dc_dmub_srv' is null. The fix is to check if 'dc_dmub_srv' is null before dereferencing it. Thus moving the null checks for 'dc_dmub_srv' to the beginning of the functions to ensure that 'dc_dmub_srv' is not null when it is dereferenced. Found by smatch & thus fixing the below: drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:133 dc_dmub_srv_cmd_list_queue_execute() warn: variable dereferenced before check 'dc_dmub_srv' (see line 128) drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_is_hw_pwr_up() warn: variable dereferenced before check 'dc_dmub_srv' (see line 1164)
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-03 18:06 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 65138eb72e1fc687be49932b9a45325598ffa01c , < 351080ba3414c96afff0f1338b4aeb2983195b80 (git)
Affected: 65138eb72e1fc687be49932b9a45325598ffa01c , < d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907 (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.7.7 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "redhat_vex": {
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      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
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      "title": "kernel: drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26729.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T13:56:47Z",
      "cve": "CVE-2024-26729",
      "id": "CVE-2024-26729",
      "initial_release_date": "2024-04-10T02:16:35Z",
      "product_status:known_not_affected": "364",
      "product_status:recommended": "202",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26729",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26729.json",
      "version": "34"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:14:12.976Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26729\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-04-03T18:06:25.283225Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:21.734Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"65138eb72e1fc687be49932b9a45325598ffa01c\", \"lessThan\": \"351080ba3414c96afff0f1338b4aeb2983195b80\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"65138eb72e1fc687be49932b9a45325598ffa01c\", \"lessThan\": \"d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.7.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80\"}, {\"url\": \"https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907\"}], \"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: Fix potential null pointer dereference in dc_dmub_srv\\n\\nFixes potential null pointer dereference warnings in the\\ndc_dmub_srv_cmd_list_queue_execute() and dc_dmub_srv_is_hw_pwr_up()\\nfunctions.\\n\\nIn both functions, the \u0027dc_dmub_srv\u0027 variable was being dereferenced\\nbefore it was checked for null. This could lead to a null pointer\\ndereference if \u0027dc_dmub_srv\u0027 is null. The fix is to check if\\n\u0027dc_dmub_srv\u0027 is null before dereferencing it.\\n\\nThus moving the null checks for \u0027dc_dmub_srv\u0027 to the beginning of the\\nfunctions to ensure that \u0027dc_dmub_srv\u0027 is not null when it is\\ndereferenced.\\n\\nFound by smatch \u0026 thus fixing the below:\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:133 dc_dmub_srv_cmd_list_queue_execute() warn: variable dereferenced before check \u0027dc_dmub_srv\u0027 (see line 128)\\ndrivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_is_hw_pwr_up() warn: variable dereferenced before check \u0027dc_dmub_srv\u0027 (see line 1164)\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.7\", \"versionStartIncluding\": \"6.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"6.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:03:00.959Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26729\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:03:00.959Z\", \"dateReserved\": \"2024-02-19T14:20:24.164Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T17:00:17.494Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.