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CVE-2011-2942

Estado: ModificadaMedia (6.8)—

Un parche de Red Hat para la función __br_deliver en net/bridge/br_forward.c en el Kernel de Linux v2.6.18 en Red Hat Enterprise Linux (RHEL) 5 permite a atacantes remotos causar una denegación de servicio (NULL pointer dereference y caída del sistema) o posiblemente tener otro impacto no especificado mediante el aprovechamiento de la conectividad con una interfaz de red que utiliza un dispositivo Ethernet puente.

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 (2)

Linux — Linux KernelRedhat — Enterprise Linux

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2011-2942",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2013-06-08T13:05:55.130",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2011/10/24/3",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=730917",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2011/10/24/3",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=730917",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A certain Red Hat patch to the __br_deliver function in net/bridge/br_forward.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging connectivity to a network interface that uses an Ethernet bridge device."
    },
    {
      "lang": "es",
      "value": "Un parche de Red Hat para la función __br_deliver en net/bridge/br_forward.c en el Kernel de Linux v2.6.18 en Red Hat Enterprise Linux (RHEL) 5 permite a atacantes remotos causar una denegación de servicio (NULL pointer dereference y caída del sistema)  o posiblemente tener otro impacto no especificado mediante el aprovechamiento de la conectividad con una interfaz de red que utiliza un dispositivo Ethernet puente."
    }
  ],
  "lastModified": "2026-06-16T23:32:17.970",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.18:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C06F0037-DE20-4B4A-977F-BFCFAB026517"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AA9B3CC0-DF1C-4A86-B2A3-A9D428A5A6E6"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\r\n\r\n'CWE-476: NULL Pointer Dereference'",
  "sourceIdentifier": "secalert@redhat.com"
}