Heap-based buffer overflow in the iscsi_add_notunderstood_response function in drivers/target/iscsi/iscsi_target_parameters.c in the iSCSI target subsystem in the Linux kernel through 3.9.4 allows remote attackers to cause a denial of service (memory corruption and OOPS) or possibly execute arbitrary code via a long key that is not properly handled during construction of an error-response packet.
https://github.com/torvalds/linux/commit/cea4dcfdad926a27a18e188720efe0f2c9403456
https://bugzilla.redhat.com/show_bug.cgi?id=968036
http://www.ubuntu.com/usn/USN-1847-1
http://www.ubuntu.com/usn/USN-1846-1
http://www.ubuntu.com/usn/USN-1845-1
http://www.ubuntu.com/usn/USN-1844-1
http://www.openwall.com/lists/oss-security/2013/06/01/2
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00017.html