sudo wget http://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo -P /etc/yum.repos.d/

[virtualbox]
name=Fedora $releasever – $basearch – VirtualBox
baseurl=http://download.virtualbox.org/virtualbox/rpm/fedora/$releasever/$basearch
enabled=1
gpgcheck=1
gpgkey=https://www.virtualbox.org/download/oracle_vbox.asc