Host: Ubuntu 20.04
Guest: Ubuntu 22.04
VM: VirtualBox 6.1.36
Both host and guest are fully up to date.
Recently, when starting the guest Ubuntu 22.04, the VM has been showing a new message shortly after Grub:
RETBleed: WARNING: Spectre v2 mitigation leaves CPU vulnerable to RETBleed attacks, data leaks possible!
What is causing this warning to suddenly show? Should I be concerned, and if so, what should I do about it?
Guest: Ubuntu 22.04
VM: VirtualBox 6.1.36
Both host and guest are fully up to date.
Recently, when starting the guest Ubuntu 22.04, the VM has been showing a new message shortly after Grub:
Quote:
RETBleed: WARNING: Spectre v2 mitigation leaves CPU vulnerable to RETBleed attacks, data leaks possible!