Oracle has announced the release of VirtualBox 4.3.8, a maintenance release of VirtualBox 4.3 which improves stability and fixes regressions.
Install VirtualBox 4.3.8 On Ubuntu / Debian
If you’re using Ubuntu or Debian and their derivatives, you can install install VirtualBox as shown below. Open up the Terminal and run the following commands:
$ sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib" >> /etc/apt/sources.list.d/virtualbox.list' $ wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add - $ sudo apt-get update $ sudo apt-get install virtualbox-4.3
For other distributions, you can download and install it manually from the official download page.
For the complete list of changes, see here.