CVE-2008-4934

Estado: ModificadaAlta (7.8)—
La función hfsplus_block_allocate en el archivo fs/hfsplus/bitmap.c en el kernel de Linux anterior a versión 2.6.28-rc1 no verifica cierto valor de retorno de la función read_mapping_page anterior al llamar a kmap, lo que permite a los atacantes causar una denegación de servicio (bloqueo de sistema) por medio de una imagen del sistema de archivos hfsplus.
CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Puntuación base: 7.8
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.29%
Percentil entre todas las CVEs puntuadas: 88
Fecha de la puntuación: 14/10/2026
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 (3)

Canonical — Ubuntu Linux Debian — Debian Linux Linux — Linux Kernel
CWE

CWE-20
Referencias

JSON original (NVD)

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          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 6.9,
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        "obtainAllPrivilege": false,
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      "lang": "en",
      "value": "The hfsplus_block_allocate function in fs/hfsplus/bitmap.c in the Linux kernel before 2.6.28-rc1 does not check a certain return value from the read_mapping_page function before calling kmap, which allows attackers to cause a denial of service (system crash) via a crafted hfsplus filesystem image."
    },
    {
      "lang": "es",
      "value": "La función hfsplus_block_allocate en el archivo fs/hfsplus/bitmap.c en el kernel de Linux anterior a versión 2.6.28-rc1 no verifica cierto valor de retorno de la función read_mapping_page anterior al  llamar a kmap, lo que permite a los atacantes causar una denegación de servicio (bloqueo de sistema) por medio  de una imagen del sistema de archivos hfsplus."
    }
  ],
  "lastModified": "2026-06-16T22:58:47.740",
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