HardenedBSD is a separate OS forked from FreeBSD with its own kernel development. While the BSDs may share some code, they're essentially all different OS'. The

HardenedBSD is a separate OS forked from FreeBSD with its own kernel development. While the BSDs may share some code, they're essentially all different OS'. There is no upstream like Linux has. As a side-note after Spectre/Meltdown, Shawn Webb complained in a NYCBUG thread about getting not being able to get access to these embargoed vulnerabilities.