Is there a link to the report anywhere?
I came across a link to the June 25 report from Mulliner and Miller which reported this vulnerability in iPhone OS 2.2 and 2.2.1. The report mentions crashing vulnerabilities in the iPhone OS and Android. There's no mention of OS 3.0 in it, probably as they hadn't had a chance to test it.
I'd be interested to see what else they've found in the past few weeks and what the full details of it are.
Report is here for anyone interested: