Is the VirtualBox installed by Discover identical to the official VirtualBox from https://www.virtualbox.org/? Or is it a fork created by Ubuntu developers?
If it is a fork, why was it forked?
Is the VirtualBox installed by Discover identical to the official VirtualBox from https://www.virtualbox.org/? Or is it a fork created by Ubuntu developers?
If it is a fork, why was it forked?
No, VirtualBox in Ubuntu repositories is not a fork.
But it may be a slightly different version number than what is available to download on virtualbox.org
Software in official repositories is tested to work with your version of Ubuntu. For compatibility reasons, it's usually not recommended to install different versions of software than the version packaged with your distribution.
Only install different versions if you actually need them and are willing to deal with potential bugs or compatibility issues that can affect that application as well as other applications that share dependencies.