Understanding Bash fork() Bomb :(){ :|:& };: code - nixCraft

Explains Linux / Unix bash fork() bomb :(){ :|:& };: which is a form of DoS attack against a Linux based computer and how to prevent fork bomb on Linux.

@nixCraft I keep seeing memes about the fork bomb and not to run it.

Wasn't this mitigated at kernel level at some point? How come it's still crashing devices?