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CVE-2017-18257

Estado: ModificadaMedia (5.5)—
Gravedad5.5Media · CVSS 3.0
Probabilidad de explotación0.38 %mayor que el 30 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

La función __get_data_block en fs/f2fs/data.c en el kernel de Linux, en versiones anteriores a la 4.11, permite que usuarios locales provoquen una denegación de servicio (desbordamiento de enteros y bucle) mediante el uso manipulado de las llamadas del sistema open y fallocate con un ioctl FS_IOC_FIEMAP.

CVSS

Puntuación base
5.5
Versión
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.38 %
Percentil entre todas las CVEs puntuadas
30
Fecha de la puntuación
20/10/2026

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

Mostrar las 10 referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
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          "confidentialityImpact": "NONE"
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  "affected": [
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      "description": [
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          "value": "CWE-190"
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    {
      "lang": "en",
      "value": "The __get_data_block function in fs/f2fs/data.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow and loop) via crafted use of the open and fallocate system calls with an FS_IOC_FIEMAP ioctl."
    },
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      "lang": "es",
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  ],
  "lastModified": "2026-06-17T01:12:29.670",
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}