{
  "id": "CVE-2024-47757",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-10-21T13:15:05.640",
  "lastModified": "2024-11-08T16:15:28.343",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential oob read in nilfs_btree_check_delete()\n\nThe function nilfs_btree_check_delete(), which checks whether degeneration\nto direct mapping occurs before deleting a b-tree entry, causes memory\naccess outside the block buffer when retrieving the maximum key if the\nroot node has no entries.\n\nThis does not usually happen because b-tree mappings with 0 child nodes\nare never created by mkfs.nilfs2 or nilfs2 itself.  However, it can happen\nif the b-tree root node read from a device is configured that way, so fix\nthis potential issue by adding a check for that case."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrige una posible lectura fuera de l\u00ednea en nilfs_btree_check_delete() La funci\u00f3n nilfs_btree_check_delete(), que comprueba si se produce una degeneraci\u00f3n en el mapeo directo antes de eliminar una entrada del \u00e1rbol b, provoca un acceso a la memoria fuera del b\u00fafer de bloque al recuperar la clave m\u00e1xima si el nodo ra\u00edz no tiene entradas. Esto no suele ocurrir porque los mapeos de \u00e1rboles b con 0 nodos secundarios nunca son creados por mkfs.nilfs2 o nilfs2 en s\u00ed. Sin embargo, puede ocurrir si el nodo ra\u00edz del \u00e1rbol b que lee desde un dispositivo est\u00e1 configurado de esa manera, as\u00ed que solucione este posible problema a\u00f1adiendo una comprobaci\u00f3n para ese caso."
    }
  ],
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.2
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          "value": "CWE-125"
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