The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through 4.8.12 omits a certain check of the dst data structure, which allows remote attackers to cause a denial of service (panic) via a fragmented IPv6 packet.
https://github.com/torvalds/linux/commit/79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2
http://www.securityfocus.com/bid/94824