Apple just release iOS 4.3.4 for iPhone, iPod touch and iPad. The latest update from Apple will most probably fix the JailbreakMe PDF vulnerability patch. So all those who rely on JailbreakMe should avoid to update to iOS 4.3.4.
Apple describes the technical fixes in a support document:
Impact: Viewing a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution
Description: A buffer overflow exists in FreeType’s handling of TrueType fonts. Viewing a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.
iOS 4.3.4 Software Update
Fixes security vulnerability associated with viewing malicious PDF files.
Direct Download Links for iOS 4.3.4 (Official from Apple)
Users with iPhone, iPod touch and iPad who rely on Jailbreak should stay from iOS 4.3.4 especially iPad 2 users as they can lose their Jailbreak by updating to iOS 4.3.4.
Apple has also published an iOS 4.2.9 update for CDMA-based iPhone 4s (the models sold by Verizon). That release offers the same changes.