As I understand, the problem is Hyper-v which effectively disables VT-x or AMT-v hardware virtualization.
OS/2 virtuals and I understand some linux and ubuntu OSes which require hardware virtualization are affected.
There are posts about this on VirtualBox forums.
Thank you so much for your time to reply! As a linux/VB user I was very curious how an MS goof could indirectly affect Linux.