Adobe Says Security Fix for Flash Player in the Works
If you don't want to bother uninstalling
menu->Settings->Enable plugins->set it to "On Demand"
This way you control if flash content will play.
It should also be known that they've only sucessfully exploited this on Windows (PC) devices, not android, mac, etc.
To be sure, vulnerabilities are never a good thing, but let's not blow this out of proportion.