Install KVM by following all the steps in the url.
https://phoenixnap.com/kb/ubuntu-install-kvm
Download Ubuntu 22.04 (Jammy Jellyfish) for KVM
https://old-releases.ubuntu.com/releases/
For Downgrading the kernel version we used Mainline Kernel Installer
sudo add-apt-repository ppa:cappelikan/ppa sudo apt install mainline
Install Linux Kernel 5.15.0-051500-generic
During boot, press ESC+Shift for the GNU GRUB Menu

Advanced option for Ubuntu

Select the kernel version that you want to boot with.

Ubuntu is ready to use
exp: https://github.com/theori-io/CVE-2022-32250-exploit

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