Being based on the Red Hat Enterprise Linux 7 operating system series, CentOS Linux 7 follows a rolling release model where the user installs once and receives regular updates forever. There’s no need to reinstall your healthy CentOS Linux installation when a new release is out, but you should keep it up-to-date at all times. A new kernel security update was released upstream by Red Hat for the Red Hat Enterprise Linux 7 operating system series, which addresses a total of six security vulnerabilities discovered and reported by various security researchers. The kernel security update is now also available for CentOS Linux 7 users.