Two Button PWNage

**CVE-2016-4484 (initramfs cryptsetup/dracut shell bug)**: The report describes a bug that can spawn an initramfs root shell (by holding Enter) on many Linux systems using cryptsetup or dracut, enabling local privilege escalation, potential information disclosure, and denial-of-service; it includes reproduction steps, an exploitation example against VMs (placing setuid binaries on an unencrypted /boot), and mitigation guidance including vendor patch links and a temporary Debian-based fix script.