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CVE-2009-0835

Estado: ModificadaBaja (3.6)—Exploit
Gravedad3.6Baja · CVSS 2.0
Probabilidad de explotación0.93 %mayor que el 60 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

La función __secure_computing en kernel/seccomp.c en el subsistema seccomp en el núcleo de Linux v2.6.28.7 y versiones anteriores en la plataforma x86_64, cuando CONFIG_SECCOMP está activo, no maneja adecuadamente (1) un proceso de 32-bit haciendo una llamada al sistema (syscall) de 64-bit o (2) un proceso de 64-bit haciendo una llamada al sistema (syscall) de 32-bit, lo cual permite a usuarios locales evitar restricciones de acceso a través de llamadas al sistema (syscalls) manipuladsa que son malinterpretadas como (a) stat o (b) chmod, una cuestión distinta que CVE-2009-0342 y CVE-2009-0343.

CVSS

Puntuación base
3.6
Versión
2.0
Vector
AV:L/AC:L/Au:N/C:P/I:P/A:N

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.93 %
Percentil entre todas las CVEs puntuadas
60
Fecha de la puntuación
21/10/2026

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).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

Mostrar las 48 referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 4.9,
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        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-264"
        }
      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The __secure_computing function in kernel/seccomp.c in the seccomp subsystem in the Linux kernel 2.6.28.7 and earlier on the x86_64 platform, when CONFIG_SECCOMP is enabled, does not properly handle (1) a 32-bit process making a 64-bit syscall or (2) a 64-bit process making a 32-bit syscall, which allows local users to bypass intended access restrictions via crafted syscalls that are misinterpreted as (a) stat or (b) chmod, a related issue to CVE-2009-0342 and CVE-2009-0343."
    },
    {
      "lang": "es",
      "value": "La función __secure_computing en kernel/seccomp.c  en el subsistema seccomp en el núcleo de Linux v2.6.28.7 y versiones anteriores en la plataforma x86_64, cuando CONFIG_SECCOMP está activo, no maneja adecuadamente (1) un proceso de 32-bit haciendo una llamada al sistema (syscall) de 64-bit o (2) un proceso de 64-bit haciendo  una llamada al sistema (syscall) de 32-bit, lo cual permite a usuarios locales evitar restricciones de acceso a través de llamadas al sistema (syscalls) manipuladsa que son malinterpretadas como (a) stat o (b) chmod, una cuestión distinta que CVE-2009-0342 y CVE-2009-0343."
    }
  ],
  "lastModified": "2026-06-16T23:05:54.700",
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  "vendorComments": [
    {
      "comment": "This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and 5.\n\nIt was addressed in Red Hat Enterprise MRG via: https://rhn.redhat.com/errata/RHSA-2009-0451.html .",
      "lastModified": "2009-05-19T00:00:00",
      "organization": "Red Hat"
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}