CVE-2011-4112 (GCVE-0-2011-4112)

Vulnerability from cvelistv5 – Published: 2012-05-17 10:00 – Updated: 2024-08-07 00:01
VLAI
Summary
The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Date Public
2011-10-24 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-07T00:01:50.510Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=751006"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://downloads.avaya.com/css/P8/documents/100156038"
          },
          {
            "name": "[oss-security] 20111121 CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2011/11/21/4"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2011-10-24T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2015-04-30T14:57:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=751006"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://downloads.avaya.com/css/P8/documents/100156038"
        },
        {
          "name": "[oss-security] 20111121 CVE-2011-4112 kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2011/11/21/4"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2011-4112",
    "datePublished": "2012-05-17T10:00:00.000Z",
    "dateReserved": "2011-10-18T00:00:00.000Z",
    "dateUpdated": "2024-08-07T00:01:50.510Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2011-4112",
      "date": "2026-07-30",
      "epss": "0.00468",
      "percentile": "0.38094"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2011-4112\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2012-05-17T11:00:32.757\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.\"},{\"lang\":\"es\",\"value\":\"El subsistema de red en el kernel de Linux antes de v3.1 no restringe adecuadamente el uso de la bandera IFF_TX_SKB_SHARING, lo que permite a usuarios locales causar una denegaci\u00f3n de servicio (panic) mediante el aprovechamiento de la funcionalidad CAP_NET_ADMIN para acceder a /proc/net/pktgen/pgctrl para, a continuaci\u00f3n, usar el paquete pktgen junto con un dispositivo de puente para una interfaz VLAN.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:N/A:C\",\"baseScore\":4.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.1\",\"matchCriteriaId\":\"156989A4-23D9-434A-B512-9C0F3583D13D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9608_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"F84E862C-FBF3-416E-8EF0-58A84B5F3F73\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9608:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A19365A8-CCD5-410E-BB2D-1B8C1E995768\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9608g_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"83FC5CEA-4EF1-4CA1-9094-6E40DCF3FAC3\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9608g:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"787289FF-AD0C-4E55-9521-F99D26412C35\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9611g_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"A8895429-A1B6-4B39-A93F-EDD5D49F03B0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9611g:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5CEDBEB4-D9F2-4BBB-940A-D887F2C7A86F\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9621g_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"BCEA36DC-17F8-4535-AB2E-329C076A8831\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9621g:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"337D5E48-6AC6-4723-862A-1F7A9180322C\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9641g_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"3FC48708-1F19-430B-A84A-4F853B247B6B\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9641g:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0C5EC883-7D5F-48E9-A3A9-A2E2A6903483\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:avaya:9641gs_firmware:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndIncluding\":\"6.6.0\",\"matchCriteriaId\":\"BE9207F2-B3B2-4312-9D32-4FD800AC0463\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:avaya:9641gs:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"09AF8F44-9695-4F82-9943-4406A3B9879B\"}]}]}],\"references\":[{\"url\":\"http://downloads.avaya.com/css/P8/documents/100156038\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/11/21/4\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=751006\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"http://downloads.avaya.com/css/P8/documents/100156038\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2011/11/21/4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=751006\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2025-11-21T12:53:34+00:00",
      "cve": "CVE-2011-4112",
      "id": "CVE-2011-4112",
      "initial_release_date": "2011-07-26T00:00:00+00:00",
      "product_status:known_not_affected": "27",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: null ptr deref at dev_queue_xmit+0x35/0x4d0",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-4112.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.