The cipso_v4_validate function in net/ipv4/cipso_ipv4.c in the Linux kernel before 3.4.8 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via an IPOPT_CIPSO IP_OPTIONS setsockopt system call.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=89d7ae34cdda4195809a5a987f697a517a2a3177
rhn.redhat.com/errata/RHSA-2013-0496.html
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.8
www.openwall.com/lists/oss-security/2013/02/20/5
bugzilla.redhat.com/show_bug.cgi?id=912900
github.com/torvalds/linux/commit/89d7ae34cdda4195809a5a987f697a517a2a3177