nvd-json-data-feeds/CVE-2024/CVE-2024-267xx/CVE-2024-26729.json

{
  "id": "CVE-2024-26729",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-04-03T17:15:50.820",
  "lastModified": "2025-01-07T21:14:13.190",
  "vulnStatus": "Analyzed",
  "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 'dc_dmub_srv' variable was being dereferenced\nbefore it was checked for null. This could lead to a null pointer\ndereference if 'dc_dmub_srv' is null. The fix is to check if\n'dc_dmub_srv' is null before dereferencing it.\n\nThus moving the null checks for 'dc_dmub_srv' to the beginning of the\nfunctions to ensure that 'dc_dmub_srv' is not null when it is\ndereferenced.\n\nFound by smatch & 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 'dc_dmub_srv' (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 'dc_dmub_srv' (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 'dc_dmub_srv' antes de verificar si era nula. Esto podr\u00eda provocar una desreferencia del puntero nulo si 'dc_dmub_srv' es nulo. La soluci\u00f3n es comprobar si 'dc_dmub_srv' es nulo antes de eliminar la referencia a \u00e9l. Por lo tanto, se mueven las comprobaciones nulas de 'dc_dmub_srv' al comienzo de las funciones para garantizar que 'dc_dmub_srv' 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 'dc_dmub_srv' (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 'dc_dmub_srv' (ver l\u00ednea 1164)"
    }
  ],
  "metrics": {
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      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
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    }
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