Apple has released iOS 4.0.2 for the iPhone 3G, 3GS, 4, second-, and third-generation iPod touch, as well as iOS 3.2.2 for the iPad. According to Apple’s release notes, both releases patch a “security vulnerability associated with viewing malicious PDF files.” Apple recently came under fire for the security hole, which could result in a hacker gaining administrator access to the device. iOS 4.0.2 and 3.2.2 are available now through…