virtualbox.org has just been updated and the changlog is up at
https://www.virtualbox.org/wiki/Changelog
PROBLEM: On two Ubuntu 17.10 guests, I lose keyboard input (mouse is okay) immediately upon either:
- confirming the notification to upgrade Guest Addition from 5.2.2 to 5.2.4, or alternately
- launching a GA upgrade via the Devices tab (my recollection is hazy on this one)
However, a Windows 10 guest upgrades Guest Additions (via the Devices tab) without issue and seems fine.
I'll try a command line GA upgrade on the Ubuntu 17.10 guest now...
[UPDATE] Yup, issuing a sudo ./VBoxLinuxAdditions.run from the CDROM seems okay. No keyboard issues and I can even launch another Devices->Install Guest Addtions without losing the keyboard.
Why would it matter how the GA upgrade was launched? Baffling...