http://secure45nbquibuw6thmenrfamhobdkkrllgxrtayn4sgmnexremexyd.onion/guides/linux-hardening.html
Redzoning adds extra areas around slabs that
detect when a slab is overwritten past its real size which can help detect overflows. init_on_alloc=1 init_on_free=1 This enables zeroing of memory during allocation and free time which can help mitigate use-after-free vulnerabilities and erase
sensitive information in memory. If your kernel version is lower than 5.3, then these options do not exist.