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CVE-2024-26662 (GCVE-0-2024-26662)

Vulnerability from cvelistv5 – Published: 2024-04-02 06:22 – Updated: 2026-05-11 20:01
VLAI
Title
drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()'
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix 'panel_cntl' could be null in 'dcn21_set_backlight_level()' 'panel_cntl' structure used to control the display panel could be null, dereferencing it could lead to a null pointer access. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed 'panel_cntl' could be null (see line 250)
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-02 15:53 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 474ac4a875ca6fea3fc5183d3ad22ef7523dca53 , < 2e150ccea13129eb048679114808eb9770443e4d (git)
Affected: 474ac4a875ca6fea3fc5183d3ad22ef7523dca53 , < 0c863cab0e9173f8b6c7bc328bee3b8625f131b5 (git)
Affected: 474ac4a875ca6fea3fc5183d3ad22ef7523dca53 , < e96fddb32931d007db12b1fce9b5e8e4c080401b (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 6.6.17 , ≤ 6.6.* (semver)
Unaffected: 6.7.5 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "product_status:fixed": "280",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "98",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amd/display: \u0027panel_cntl\u0027 could be null in \u0027dcn21_set_backlight_level()\u0027",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26662.json",
      "version": "3"
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    "suse_vex": {
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      "current_release_date": "2026-09-02T01:35:05Z",
      "cve": "CVE-2024-26662",
      "id": "CVE-2024-26662",
      "initial_release_date": "2024-04-05T02:21:25Z",
      "product_status:known_affected": "91",
      "product_status:known_not_affected": "294",
      "product_status:recommended": "202",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26662",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26662.json",
      "version": "34"
    },
    "vulnrichment": {
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                "url": "https://git.kernel.org/stable/c/2e150ccea13129eb048679114808eb9770443e4d"
              },
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                "url": "https://git.kernel.org/stable/c/0c863cab0e9173f8b6c7bc328bee3b8625f131b5"
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                "url": "https://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b"
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            ],
            "title": "CVE Program Container"
          },
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            "metrics": [
              {
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                  "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"
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              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-26662",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-04-02T15:53:23.636262Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
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                "descriptions": [
                  {
                    "description": "CWE-noinfo Not enough information",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-23T19:01:21.002Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
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              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "versions": [
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                  "status": "affected",
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                {
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                  "status": "affected",
                  "version": "474ac4a875ca6fea3fc5183d3ad22ef7523dca53",
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            {
              "defaultStatus": "affected",
              "product": "Linux",
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.9"
                },
                {
                  "lessThan": "5.9",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.17",
                  "versionType": "semver"
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                {
                  "lessThanOrEqual": "6.7.*",
                  "status": "unaffected",
                  "version": "6.7.5",
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                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.8",
                  "versionType": "original_commit_for_fix"
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              ]
            }
          ],
          "cpeApplicability": [
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              "nodes": [
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                      "vulnerable": true
                    },
                    {
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                  "negate": false,
                  "operator": "OR"
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              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix \u0027panel_cntl\u0027 could be null in \u0027dcn21_set_backlight_level()\u0027\n\n\u0027panel_cntl\u0027 structure used to control the display panel could be null,\ndereferencing it could lead to a null pointer access.\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn21/dcn21_hwseq.c:269 dcn21_set_backlight_level() error: we previously assumed \u0027panel_cntl\u0027 could be null (see line 250)"
            }
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            "dateUpdated": "2026-05-11T20:01:45.665Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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          "references": [
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            {
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            },
            {
              "url": "https://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b"
            }
          ],
          "title": "drm/amd/display: Fix \u0027panel_cntl\u0027 could be null in \u0027dcn21_set_backlight_level()\u0027",
          "x_generator": {
            "engine": "bippy-1.2.0"
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      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26662",
        "datePublished": "2024-04-02T06:22:11.715Z",
        "dateReserved": "2024-02-19T14:20:24.148Z",
        "dateUpdated": "2026-05-11T20:01:45.665Z",
        "state": "PUBLISHED"
      },
      "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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.