DKMSをいれたらとのことなので入れてみる
$ sudo apt-get install dkms
が入ってました
指示通りコマンド実行
$ sudo /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules ...done.
Uninstalling old VirtualBox DKMS kernel modulesError! Could not locate dkms.conf file.
File: does not exist.
...done.
Removing old VirtualBox pci kernel module ...done.
Removing old VirtualBox netadp kernel module ...done.
Removing old VirtualBox netflt kernel module ...done.
Removing old VirtualBox kernel module ...done.
Trying to register the VirtualBox kernel modules using DKMSError! DKMS tree already contains: vboxhost-4.3.26
You cannot add the same module/version combo more than once.
...failed!
(Failed, trying without DKMS)
Recompiling VirtualBox kernel modules ...done.
Starting VirtualBox kernel modules ...done.
なんだかFailedって出てるけど、Virtualboxが動くようになりました