Luca Todesco, also known as qwertyoruiop, has released a 0day exploit for iOS 9.3.3b and lower after discovering that his exploit no longer works in iOS 10.



"So- apple killed both of my jailbreak chains. gasgauge was in one", tweeted Todesco.



Dubbed 'GasGauge', the double free race condition exploit needs a sandbox escape and any uid. It gives you arbitrary alloc and free primitives.



"iOS 10 went hard on security", says Todesco. "Basically all the techniques I relied on are broken. Need to start from scratch."



While this exploit isn't a full jailbreak release, it could be used by another developer to produce a jailbreak for those on iOS 9.3.3b or lower.



"I hope it makes anyone realize how hard it actually is to pull this stuff on, considering it's just 1/4th of the deal. Respect devs."



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