Red Hat Enterprise Linux 8.1 adds live Linux kernel patching

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RHEL 8.1 8.1 now has full support for live kernel patching. You can now update your Linux kernel for Critical or Important Common Vulnerabilities and Exposures (CVEs) without needing to go to the trouble of a system reboot. This keeps your system up and running even serious security bugs are patched behind the scenes.
Source: ZDNet