net: netlink: af_netlink: Prevent empty skb by adding a check on len.
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.259 by commit 54e785f7d5c197bc06dbb8053700df7e2a093ced. For more details please see the references link.