Enterprise distros such as Redhat fork the kernel, then patch for bugs and vulnerabilities, to avoid adding too many new features to a major version release of

Enterprise distros such as Redhat fork the kernel, then patch for bugs and vulnerabilities, to avoid adding too many new features to a major version release of the OS. This actually makes a lot of sense from a stability and predictability perspective. It would be significantly harder to support the upstream kernel releases, as new features and behavioral changes occur rather often.