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CVE-2018-1094

Estado: ModificadaMedia (5.5)—

La función ext4_fill_super en fs/ext4/super.c en el kernel de Linux hasta la versión 4.15.15 no inicializa siempre el controlador de las sumas de verificación crc32c, lo que permite que los atacantes provoquen una denegación de servicio (desreferencia de puntero NULL en ext4_xattr_inode_hash y cierre inesperado del sistema) mediante una imagen ext4 manipulada.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (5)

Canonical — Ubuntu LinuxLinux — Linux KernelRedhat — Enterprise Linux DesktopRedhat — Enterprise Linux ServerRedhat — Enterprise Linux Workstation

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-1094",
  "cveTags": [],
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        "type": "Primary",
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          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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      "description": [
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          "lang": "en",
          "value": "CWE-476"
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      "lang": "en",
      "value": "The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image."
    },
    {
      "lang": "es",
      "value": "La función ext4_fill_super en fs/ext4/super.c en el kernel de Linux hasta la versión 4.15.15 no inicializa siempre el controlador de las sumas de verificación crc32c, lo que permite que los atacantes provoquen una denegación de servicio (desreferencia de puntero NULL en ext4_xattr_inode_hash y cierre inesperado del sistema) mediante una imagen ext4 manipulada."
    }
  ],
  "lastModified": "2026-06-17T01:50:28.043",
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