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CVE-2016-4581

Estado: ModificadaMedia (5.5)—

fs/pnode.c en el kernel de Linux en versiones anteriores a 4.5.4 no cruza adecuadamente la propagación del montaje de árbol en un determinado caso implicando un montaje esclavo, lo que permite a usuarios locales provocar una denegación de servicio (referencia a puntero NULL y OOPS) a través de una serie de llamadas de soporte manipuladas.

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 (3)

Canonical — Ubuntu LinuxLinux — Linux KernelOracle — Linux

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2016-4581",
  "cveTags": [],
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          "vectorString": "AV:L/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,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
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      "lang": "en",
      "value": "fs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted series of mount system calls."
    },
    {
      "lang": "es",
      "value": "fs/pnode.c en el kernel de Linux en versiones anteriores a 4.5.4 no cruza adecuadamente la propagación del montaje de árbol en un determinado caso implicando un montaje esclavo, lo que permite a usuarios locales provocar una denegación de servicio (referencia a puntero NULL y OOPS) a través de una serie de llamadas de soporte manipuladas."
    }
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  "lastModified": "2026-06-17T00:47:50.013",
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  "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\">CWE-476: NULL Pointer Dereference</a>",
  "sourceIdentifier": "secalert@redhat.com"
}