{"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.","modified":"2026-04-10T03:43:00.650533Z","published":"2013-11-20T13:19:41Z","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"}],"schema_version":"1.7.5"}