gsd-2024-26729
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
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)
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-26729"
      ],
      "details": "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)",
      "id": "GSD-2024-26729",
      "modified": "2024-02-20T06:02:29.175610Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2024-26729",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "028bac583449",
                          "version_value": "351080ba3414"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "6.7"
                              },
                              {
                                "lessThan": "6.7",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "6.7.*",
                                "status": "unaffected",
                                "version": "6.7.7",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "6.8",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "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)"
          }
        ]
      },
      "generator": {
        "engine": "bippy-5f0117140d9a"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80"
          },
          {
            "name": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "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)"
          }
        ],
        "id": "CVE-2024-26729",
        "lastModified": "2024-04-03T17:24:18.150",
        "metrics": {},
        "published": "2024-04-03T17:15:50.820",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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