Here's the info... (Score 3)

The Mac Resource Page had the best coverage of this DoS attack, imho. They cover it a lot better and in more detail than I could, so instead of repeating their words, I'll just post a link to them here: http://www.macresource.com/. Apple did indeed release a patch today by the name of "Open Transport Tuner". You can find it at the Apple Software Library (http://asu.info.apple.com/) on the "Recent Changes" page.