FKIE_CVE-2011-4112

Vulnerability from fkie_nvd - Published: 2012-05-17 11:00 - Updated: 2026-06-16 23:34
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.
References
secalert@redhat.comhttp://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
secalert@redhat.comhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Mailing List, Patch, Vendor Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2011/11/21/4Mailing List, Patch, Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=751006Exploit, Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://downloads.avaya.com/css/P8/documents/100156038Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=550fd08c2cebad61c548def135f67aba284c6162
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2011/11/21/4Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=751006Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/550fd08c2cebad61c548def135f67aba284c6162Patch, Third Party Advisory

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  "cveTags": [],
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      "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."
    }
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  "id": "CVE-2011-4112",
  "lastModified": "2026-06-16T23:34:26.930",
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        "baseSeverity": "MEDIUM",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
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  "published": "2012-05-17T11:00:32.757",
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}



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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

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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.
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