xfrm: fix MTU regression
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 v4.14.270 by commit d4d5190b942ac7a0f048db718c0a9f280b4fc2ce, it was introduced in version v4.14.16 by commit 8278804e05f6bcfe3fdfea4a404020752ead15a6. For more details please see the references link.