Kernel live patching is a solution that allows you to patch a running kernel with selected critical and important CVEs without rebooting your system.
For more information about the kernel live patching solution and how it works in Red Hat Enterprise Linux 7 see Applying patches with kernel live patching in the Kernel administration guide or refer to the release note notation. In RHEL 7 the live patching solution is supported from version 7.7.
In RHEL 8 the kernel live patching solution is supported from version 8.1 and the usage is identical to RHEL 7. The documentation will be available with the RHEL 8.1 release on November 5 2019.