{
  "modified": "2025-08-09T19:01:28Z",
  "published": "2013-11-20T13:19:41Z",
  "id": "CVE-2013-4563",
  "details": "The udp6_ufo_fragment function in net/ipv6/udp_offload.c in the Linux kernel through 3.12, when UDP Fragmentation Offload (UFO) is enabled, does not properly perform a certain size comparison before inserting a fragment header, which allows remote attackers to cause a denial of service (panic) via a large IPv6 UDP packet, as demonstrated by use of the Token Bucket Filter (TBF) queueing discipline.",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288e"
    },
    {
      "type": "ADVISORY",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.ubuntu.com/usn/USN-2113-1"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.ubuntu.com/usn/USN-2117-1"
    },
    {
      "type": "ARTICLE",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html"
    },
    {
      "type": "ARTICLE",
      "url": "http://www.openwall.com/lists/oss-security/2013/11/13/9"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e"
    },
    {
      "type": "FIX",
      "url": "http://www.openwall.com/lists/oss-security/2013/11/13/9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1030015"
    }
  ]
}