Still using the VirtualBox 4.2 series? Oracle has recently released an update, VirtualBox 4.2.28, with various Linux related bug fixes, including Linux Kernel 3.19 fixes, Gnome Session crashes, etc.

Below is the full list of changes:

• VMM: fixed a potential misbehavior after restoring the A20 state from a saved state
• VRDP: fixed a rare crash when using remote audio input
• Floppy: fixed read errors and guest memory corruption when running under control of QEMM
• Storage: fixed data corruption when resizing VHD images under certain circumstances
• NAT: fixed handling of the RFC 1533 DHCP PAD option
• X11 hosts: Made the extra key on Brazilian Thinkpads work (bug #8745)
• X11 hosts: fixed a problem of input focus cycles and immediately released key presses in full screen mode (bug #13238)
• Linux guests: fix a crash in gnome-session (bug #13335)
• Linux Additions: fixed a potential use-after-free when unloading the VBoxGuest module
• Linux Additions: Linux 3.19 fixes (#13741)
• X11 Additions: support X.Org Server 1.15 (bug #12623)
• X11 guests: Add support for X.Org Server 1.16 (bug #13207)
• X11 guests: fixed a wrong parameter in the video driver which caused problems with full-screen X11 clients (bug #2748)
• X11 guests: fix a bug handling video driver display properties w

To install Virtualbox 4.2.28, download the installer from the link below (for Windows, Mac OS X, and Linux systems):

Download VBox 4.2.28

For Debian/Ubuntu based system, you can also install/upgrade Vbox from its official repository. To do so:

1. Open terminal from the Dash or by pressing Ctrl+Alt+T on keyboard. When it opens, run command to add vbox repository:

sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -sc) contrib" >> /etc/apt/sources.list.d/virtualbox.list'

2. Then install the keyring:

wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -

3. Finally update package cache and install or upgrade vbox 4.2.x:

sudo apt-get update; sudo apt-get install virtualbox-4.2

Support for Ubuntu 8.04, Ubuntu 10.04, Ubuntu 11.04, …, up to Ubuntu 14.10.