That's what I was talking about too. The kernels of both have source available, Linux vs xnu. But the userland of Android is mostly memory-safe Java, and the

That's what I was talking about too. The kernels of both have source available, Linux vs xnu. But the userland of Android is mostly memory-safe Java, and the userland of iOS (e.g. iMessage) is mostly memory-unsafe ObjC. The kind of marshalling and memory management exploits described in the p0 posts are very unlikely to happen on the Android side.