Vulnerability-Lookup

FKIE_CVE-2024-26729

Vulnerability from fkie_nvd - Published: 2024-04-03 17:15 - Updated: 2026-06-17 07:18

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	6.8
linux	linux_kernel	6.8
linux	linux_kernel	6.8
linux	linux_kernel	6.8
linux	linux_kernel	6.8

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "351080ba3414c96afff0f1338b4aeb2983195b80",
              "status": "affected",
              "version": "65138eb72e1fc687be49932b9a45325598ffa01c",
              "versionType": "git"
            },
            {
              "lessThan": "d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907",
              "status": "affected",
              "version": "65138eb72e1fc687be49932b9a45325598ffa01c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "575EE16B-67F2-4B5B-B5F8-1877715C898B",
              "versionEndExcluding": "6.7.7",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
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              "criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "B9F4EA73-0894-400F-A490-3A397AB7A517",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*",
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  ],
  "cveTags": [],
  "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)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: corrige una posible desreferencia de puntero nulo en dc_dmub_srv. Corrige posibles advertencias de desreferencia de puntero nulo en las funciones dc_dmub_srv_cmd_list_queue_execute() y dc_dmub_srv_is_hw_pwr_up(). En ambas funciones, se estaba desreferenciando la variable \u0027dc_dmub_srv\u0027 antes de verificar si era nula. Esto podr\u00eda provocar una desreferencia del puntero nulo si \u0027dc_dmub_srv\u0027 es nulo. La soluci\u00f3n es comprobar si \u0027dc_dmub_srv\u0027 es nulo antes de eliminar la referencia a \u00e9l. Por lo tanto, se mueven las comprobaciones nulas de \u0027dc_dmub_srv\u0027 al comienzo de las funciones para garantizar que \u0027dc_dmub_srv\u0027 no sea nulo cuando se desreferencia. Encontrado por smatch y arreglando as\u00ed lo siguiente: drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:133 dc_dmub_srv_cmd_list_queue_execute() advertencia: variable desreferenciada antes de verificar \u0027dc_dmub_srv\u0027 (ver l\u00ednea 128) drivers/ gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_is_hw_pwr_up() advertencia: variable desreferenciada antes de verificar \u0027dc_dmub_srv\u0027 (ver l\u00ednea 1164)"
    }
  ],
  "id": "CVE-2024-26729",
  "lastModified": "2026-06-17T07:18:11.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-26729",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-04-03T18:06:25.283225Z",
          "version": "2.0.3"
        }
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  "published": "2024-04-03T17:15:50.820",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80"
    },
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      ],
      "url": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907"
    }
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2024-04-03 17:00 – Updated: 2026-05-11 20:03

Title

drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv

Summary

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

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6856 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/351080ba3414c96af…
https://git.kernel.org/stable/c/d2b48f340d9e4a8fb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 65138eb72e1fc687be49932b9a45325598ffa01c , < 351080ba3414c96afff0f1338b4aeb2983195b80 (git) Affected: 65138eb72e1fc687be49932b9a45325598ffa01c , < d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.7.7 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26729",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-03T18:06:25.283225Z",
                "version": "2.0.3"
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              "type": "ssvc"
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          }
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        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:48:53.203Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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          "dateUpdated": "2024-08-02T00:14:12.976Z",
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        "references": [
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            "url": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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    "datePublished": "2024-04-03T17:00:17.494Z",
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    "state": "PUBLISHED"
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}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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