Two days ago the newest version of Kali 2018.1 was released, as usual this brought a bunch of update, upgrades, patches and bug fixes.
One of the major components that got updated in this release is the kernel, Kali 2018.1 now comes with kernel version 4.14.12, this brings a number of new features and enhancements to the system, the main ones are AMD secure memory encryption support (for processors that support it) and increased memory support (if you can reach the limit), with the new 4.14.12 kernel the system can address 4 PB pf physical memory!
Fixing & Upgrading Kali 2017
If you already have Kali installed you might have noticed that apt-get started giving a pgp errors, this is because the gpg key for Kali’s repo has expired, this can be easily fixed using the following command:
wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add
Now apt-get should work as usual, just do
then use it as usual and it should work perfectly.
If you want to upgrade your current installation to the latest version of Kali then just run the following command
apt update && apt full-upgrade
PS: I am not a fan of upgrading systems like this, I usually just remove my old VM and install a fresh one.