Hi guys! At recon I was approached by a nice guy who explained how to fix copy and paste on virtualbox using hardened-sources on the guest. Is it us who is handling the virtualization security profiles? If so blueness, can you give a look at this link and apply the patches on your next kernel bump? https://forums.grsecurity.net/viewtopic.php?f=3&t=4642
CCing adel, who shared this tip in case you need to ask him anything.
Since we aren't maintaining newer versions of hardened-sources I'll close this.