Taking a look at <https://software.opensuse.org/package/virtualbox> the current “official” Oracle VirtualBox version for Leap 42.1 is 5.0.10 (or 5.0.8) {confusing}.
But, I can recommend to use the “Virtualisation” build version <https://build.opensuse.org/package/show?project=Virtualization&package=virtualbox>: 5.0.14I must admit that I’m running the 5.0.14 version [Windows 10 inside] on 13.2 - no real experience with VirtualBox on Leap 42.1.
[Need to watch out for the Extensions updates with the upgrade from 5.0.10 to 5.0.14.]