Ah the invalid pointer the nastiest thing ever! Pointers are like a blade with two edges they benefit you and hurt you at the same time. BTW it's a good job to hunt for bugs but it's a little weird to release a exploit in just first day of analysis and continue to following days. It seems outfit have spend a lot of time to find bugs in famous products and release them in this schedule to make some name. Of course if the exploits were that obvious to find they would have found before.