However, heavy duty technical info is out there for anyone who wants it. Reiback et al put up a whole website just to share the details of the threat with everyone. Though you'd never know it by reading 99% of the stories. So here it is:
(Easy enough URL for ya?)
Basically, we have another set of buffer overflow attacks caused by dumb programmers who said "nobody will EVER slip an invalid RFID tag into MY pile!" Oh yes they will, buck-o. Especially if your RFID tags are inventorying "secure" airline luggage or expensive retail merchandise.