CVE-2013-4563

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.

Score

CVSS 2.0 7.1 High

Status

Modified - secalert@redhat.com

Published

2013-11-20

Last modified

2024-08-06

Weaknesses

CWE-189

Affected products

• Ubuntu Linux (Canonical)
• Linux Kernel (Linux)

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0e033e04c2678dbbe74a46b23fffb7bb918c288e
• http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
• http://www.openwall.com/lists/oss-security/2013/11/13/9
• http://www.ubuntu.com/usn/USN-2113-1
• http://www.ubuntu.com/usn/USN-2117-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1030015
• https://github.com/torvalds/linux/commit/0e033e04c2678dbbe74a46b23fffb7bb918c288e