To preface, I run Ubuntu 16.04 on my computers, and for Windows work software have VMs for 2000, 7 and 10.
This morning the expected kernel update was waiting to be installed, for the 4.13.0-26 kernel. I figure it has the patches for Meltdown, so I let it install and the restart.
After the restart, things seem to be working fine except for VirtualBox. Attempting to load any of my VMs will hard-crash the computer, requiring a manual reset. Appears to not be just me.
This is ... less than helpful. After confirming that the crash is reproducible, with any VM loaded from different hard drives, I've rebooted into the previous kernel (4.10.0-42) and all is fine.
Anyone else having similar trouble?