If the Kernel Panic issue still persists after following the steps in my post about the recent Linux kernel update here, you might have a different version of VirtualBox installed (which isn't compatible with the new kernel) than the one previously distributed in the standard repositories.
To try and resolve this issue, please fully uninstall the current version of VirtualBox, and then install the standard version of VirtualBox (as in the Zorin OS repositories) by entering these 2 commands into the Terminal:
sudo apt remove virtualbox virtualbox-qt virtualbox-dkms virtualbox*sudo apt install virtualbox