CVE-2013-4163 Information

Description

The ip6_append_data_mtu function in net/ipv6/ip6_output.c in the IPv6 implementation in the Linux kernel through 3.10.3 does not properly maintain information about whether the IPV6_MTU setsockopt option had been specified which allows local users to cause a denial of service (BUG and system crash) via a crafted application that uses the UDP_CORK option in a setsockopt system call.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=75a493e60ac4bbe2e977e7129d6d8cbb0dd236be http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00004.html http://secunia.com/advisories/54148 http://www.openwall.com/lists/oss-security/2013/07/23/10 http://www.securityfocus.com/bid/61412 http://www.ubuntu.com/usn/USN-1938-1 http://www.ubuntu.com/usn/USN-1941-1 http://www.ubuntu.com/usn/USN-1942-1 http://www.ubuntu.com/usn/USN-1943-1 http://www.ubuntu.com/usn/USN-1944-1 http://www.ubuntu.com/usn/USN-1945-1 http://www.ubuntu.com/usn/USN-1946-1 http://www.ubuntu.com/usn/USN-1947-1 https://bugzilla.redhat.com/show_bug.cgi?id=987633 https://github.com/torvalds/linux/commit/75a493e60ac4bbe2e977e7129d6d8cbb0dd236be