Actually it has fixed the virtualbox problem.
linux515 5.15.46-1 → 5.15.48-1
linux515-virtualbox-host-modules 6.1.34-14 → 6.1.34-17
EDIT 1 :
I’ve had many unexpected restarts that I don’t think were Windows’ fault.
Looks like we have to wait for vbox 6.1.35 or 36, see this forum.
EDIT 2 (2022-06-22) :
Just realized that vbox 6.1.34 is working OK with linux 5.18
It was mentioned here 6 days ago, but I didn’t notice because the noise to signal ratio is so high 