Yet again an exploit that could impact a massive number of Linux servers was disclosed, and dealt with. With a very large community to support and stand by *nix users, this is how it happens.
This time though, not many had to try out the work-arounds, to stay protected; As the exploit was patched up in the packages of OS(s) like RHEL and CentOS rather quickly. If you have stuck to the golden rule of updating the O/S packages regularly, well you can now relax. However for those who have still left the door open, it is high time you lock it in by updating the packages!