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CVE-2009-1046

Estado: ModificadaMedia (4.7)—Exploit
Gravedad4.7Media · CVSS 2.0
Probabilidad de explotación0.78 %mayor que el 55 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

La funcionalidad de selección de consola en el kernel de Linux 2.6.28 en versiones anteriores a 2.6.28.4, 2.6.25 y posiblemente versiones anteriores, cuando se utiliza la consola UTF-8, permite a atacantes físicamente próximos causar una denegación de servicio (corrupción de memoria) seleccionando un número pequeño de carácteres de 3 bytes UTF-8, lo que desencadena un "error de memoria off-by-two". NOTA: no queda claro si el problema traspasa límites de privilegio.

CVSS

Puntuación base
4.7
Versión
2.0
Vector
AV:L/AC:M/Au:N/C:N/I:N/A:C

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.78 %
Percentil entre todas las CVEs puntuadas
55
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 28 referencias

JSON original (NVD)

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{
  "id": "CVE-2009-1046",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.7,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-03-23T16:30:01.577",
  "references": [
    {
      "url": "http://lists.openwall.net/linux-kernel/2009/01/30/333",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.openwall.net/linux-kernel/2009/02/02/364",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/34917",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/34981",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/35121",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2009/dsa-1787",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2009/dsa-1800",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.4",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/10",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/11",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/9",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2009-0451.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/33672",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-751-1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.openwall.net/linux-kernel/2009/01/30/333",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.openwall.net/linux-kernel/2009/02/02/364",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/34917",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/34981",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/35121",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2009/dsa-1787",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2009/dsa-1800",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.4",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/11",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/02/12/9",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2009-0451.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/33672",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.ubuntu.com/usn/usn-751-1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The console selection feature in the Linux kernel 2.6.28 before 2.6.28.4, 2.6.25, and possibly earlier versions, when the UTF-8 console is used, allows physically proximate attackers to cause a denial of service (memory corruption) by selecting a small number of 3-byte UTF-8 characters, which triggers an \"off-by-two memory error.\" NOTE: it is not clear whether this issue crosses privilege boundaries."
    },
    {
      "lang": "es",
      "value": "La funcionalidad de selección de consola en el kernel de Linux 2.6.28 en versiones anteriores a 2.6.28.4, 2.6.25 y posiblemente versiones anteriores, cuando se utiliza la consola UTF-8, permite a atacantes físicamente próximos causar una denegación de servicio (corrupción de memoria) seleccionando un número pequeño de carácteres de 3 bytes UTF-8, lo que desencadena un \"error de memoria off-by-two\". NOTA: no queda claro si el problema traspasa límites de privilegio."
    }
  ],
  "lastModified": "2026-06-16T23:06:23.347",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.25:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "71295664-89EC-4BB3-9F86-B1DDA20FAC5A"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.28:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "26BD805F-08EB-42EC-BC54-26A7278E5089"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.28.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "217715A5-E69D-45C0-B8E4-5681528C651B"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.28.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A87AD66C-4321-4459-8556-3B0BA38C493A"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.28.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "87A347E0-9C0B-4674-9363-3C36DA27AC45"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "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"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}