ipv6: Fix signed integer overflow in l2tpip6sendmsg
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 v5.18.6 by commit 034246122f5c5e2e2a0b9fe04e24517920e9beb1. For more details please see the references link.