obsd01# syspatch
Get/Verify syspatch78-018_pledgep... 100% Installing patch 018_pledgepaths
Get/Verify syspatch78-019_unveil_... 100% Installing patch 019_unveil_mount
Relinking to create unique kernel... done; reboot to load the new kernel
Errata can be reviewed under /var/syspatch
obsd01#

Easy Peasy.

#OpenBSD