CVE-2013-4470 Information

Description

The Linux kernel before 3.12 when UDP Fragmentation Offload (UFO) is enabled does not properly initialize certain data structures which allows local users to cause a denial of service (memory corruption and system crash) or possibly gain privileges via a crafted application that uses the UDP_CORK option in a setsockopt system call and sends both short and long packets related to the ip_ufo_append_data function in net/ipv4/ip_output.c and the ip6_ufo_append_data function in net/ipv6/ip6_output.c.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c547dbf55d5f8cf615ccc0e7265e98db27d3fb8b http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e93b7d748be887cd7639b113ba7d7ef792a7efb9 http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00026.html http://rhn.redhat.com/errata/RHSA-2013-1801.html http://rhn.redhat.com/errata/RHSA-2014-0100.html http://rhn.redhat.com/errata/RHSA-2014-0284.html http://www.openwall.com/lists/oss-security/2013/10/25/5 http://www.securityfocus.com/bid/63359 http://www.ubuntu.com/usn/USN-2040-1 http://www.ubuntu.com/usn/USN-2042-1 http://www.ubuntu.com/usn/USN-2043-1 http://www.ubuntu.com/usn/USN-2044-1 http://www.ubuntu.com/usn/USN-2046-1 http://www.ubuntu.com/usn/USN-2049-1 http://www.ubuntu.com/usn/USN-2050-1 http://www.ubuntu.com/usn/USN-2066-1 http://www.ubuntu.com/usn/USN-2067-1 http://www.ubuntu.com/usn/USN-2069-1 http://www.ubuntu.com/usn/USN-2073-1 https://bugzilla.redhat.com/show_bug.cgi?id=1023477 https://github.com/torvalds/linux/commit/c547dbf55d5f8cf615ccc0e7265e98db27d3fb8b https://github.com/torvalds/linux/commit/e93b7d748be887cd7639b113ba7d7ef792a7efb9 https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.12.bz2