The nfnetlink_rcv_batch function in net/netfilter/nfnetlink.c in the Linux kernel before 4.5 does not check whether a batch message's length field is large enough, which allows local users to obtain sensitive information from kernel memory or cause a denial of service (infinite loop or out-of-bounds read) by leveraging the CAP_NET_ADMIN capability.
https://github.com/torvalds/linux/commit/c58d6c93680f28ac58984af61d0a7ebf4319c241
http://www.securityfocus.com/bid/94147