ziVA - iOS kernel exploit 64-bit iOS devices
Offsets modifications for other iOS devicesLike a lot (if not most) of the iOS kernel exploits, this also requires offsets for each iOS device and version. Those will be posted in the close future (when I get more time) but should be acquired from AppleAVEDriver (you can get a hint on the offsets from the comments above them).
Sandbox escapeLike mentioned, AppleAVEDriver direct access requires sandbox escape (either mediaserverd sandbox context or no sandbox at all). Fortunately, Sandbox escape exploits have been released by P0, which means this can be used to completely compromise a kernel, and a step towards a full jailbreak.
Is it a Jailbreak?
This is a crucial part in a Jailbreak chain, but this never aimed to become a Jailbreak.