You Can Now Install Linux Kernel 5.18 on Ubuntu and Ubuntu-Based Distributions
Linux kernel 5.18 is here and users of Ubuntu and Ubuntu-based distributions can now install it if they need support for their hardware or just want to use some of its new features and enhancements.
Linux kernel 5.18 brings lots of goodies for GNU/Linux users, including support for new features in AMD and Intel CPUs, improved support for NVMe devices, new and improved security features to protect you against the latest threats, as well as new and updated drivers for top-notch hardware support.
Ubuntu is one of those distributions that do not receive a newer kernel version when a new stable branch is available. Interim Ubuntu releases stick to the kernel version that they shipped with, so users might want to upgrade the kernel to newer releases if they need additional hardware support.