ziVA: Zimperium's iOS Video Audio Kernel Exploit

Zimperium published a detailed disclosure of multiple iOS kernel vulnerabilities (including CVE-2017-6979 and several AVEVideoEncoder bugs) and released a fully chained exploit (ziVA) and PoC targeting iOS 10.3.1 and earlier; the flaws allow an attacker with initial code execution to escalate to kernel privileges and fully compromise affected devices, though Apple issued patches in May 2017 and users are advised to update.