Yeah, and (unlike Microsoft) they come out as soon as they're
told, not when the media abuse about their exploitation gets too much. There's also a lot less of them in Linux and Unix than there are in Windows.
Mind you, the majority of updates in Linux are improvement patches and not security patches. In the last eight months I think I've seen about five or six security patches for Zorin OS, and most of them have related to services I don't use at the moment - eg Bluetooth and WiFi.