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CVE-2011-4326

Status: ModifiedHigh (7.1)—

The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Avaya — 96x1 IP Deskphone FirmwareLinux — Linux Kernel

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-4326",
  "cveTags": [],
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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  "published": "2012-05-17T11:00:33.837",
  "references": [
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      "tags": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-399"
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  ],
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      "value": "The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device."
    },
    {
      "lang": "es",
      "value": "La función udp6_ufo_fragment en net/ipv6/udp.c en el kernel de Linux antes de v2.6.39, cuando la opción de \"UDP Fragmentation Offload\" (UFO) está activada, permite a atacantes remotos causar una denegación de servicio (caída del sistema) mediante el envío de paquetes IPv6 UDP a un dispositivo de puente."
    }
  ],
  "lastModified": "2026-06-16T23:34:46.843",
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