http://cypherpunk-handbook.i2p/articles/openbsd.html
This aggressive randomisation of the
stack location is for all 64-bit architectures except alpha. This
should make it harder for an attacker to find the stack. It is possible, through patches like PaX/grsecurity, to reinforce
the security of the Linux kernel in this regard, but this requires
manual intervention and is not like in OpenBSD, not even by default
(does Fedora Secureblue have something like that?