Sources: CNET, Apple
quote: Impact: An application may execute unsigned codeDescription: A logic error existed in the mmap system call's checking of valid flag combinations. This issue may lead to a bypass of codesigning checks. This issue does not affect devices running iOS prior to version 4.3.CVE-IDCVE-2011-3442 : Charlie Miller of Accuvant Labs
quote: A few hours after the news broke, Miller received an e-mail from Apple noting that his developer program access had been revoked for a period of one year for violating its terms of service. He called the move "heavy handed," noting that Apple gave security researchers free access to the dev program for the purposes of discovering flaws.
quote: ...it just worked?