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CVE-2009-1527

Estado: ModificadaMedia (6.9)—Exploit
Gravedad6.9Media · CVSS 2.0
Probabilidad de explotación0.49 %mayor que el 41 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

Condición de carrera en la función ptrace_attach en kernel/ptrace.c en el kernel de Linux anterior a 2.6.40-rc4 permite a usuarios locales conseguir privilegios a través de la llamada PTRACE_ATTACH ptrace durante una ejecución de sistema que esta lanzando una aplicacion setuid, relacionada con el incorrecto bloqueo del objeto cred_exec_mutex.

CVSS

Puntuación base
6.9
Versión
2.0
Vector
AV:L/AC:M/Au:N/C:C/I:C/A:C

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.49 %
Percentil entre todas las CVEs puntuadas
41
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 22 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2009-1527",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
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      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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  "published": "2009-05-05T20:30:00.313",
  "references": [
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        "VDB Entry"
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    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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        "VDB Entry"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object."
    },
    {
      "lang": "es",
      "value": "Condición de carrera en la función ptrace_attach en kernel/ptrace.c en el kernel de Linux anterior a 2.6.40-rc4 permite a usuarios locales conseguir privilegios a través de la llamada PTRACE_ATTACH ptrace durante una ejecución de sistema que esta lanzando una aplicacion setuid, relacionada con el incorrecto bloqueo del objeto cred_exec_mutex."
    }
  ],
  "lastModified": "2026-06-16T23:07:27.387",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "3871E973-1DCE-4C2D-8FF0-9330AF928297",
              "versionEndIncluding": "2.6.29"
            },
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            {
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              "vulnerable": true,
              "matchCriteriaId": "E242D3DE-D1DC-406A-BCC3-C4380B7EC369"
            }
          ],
          "operator": "OR"
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  ],
  "vendorComments": [
    {
      "comment": "Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, or Red Hat Enterprise MRG.",
      "lastModified": "2009-05-06T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}