l2tp: close all race conditions in l2tptunnelregister()
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 v5.15.91 by commit 77e8ed776cdb1a24b2aab8fe7c6f1f154235e1ce, it was introduced in version v3.6 by commit 37159ef2c1ae1e696b24b260b241209a19f92c60. For more details please see the references link.