Sony Playstation 4 version 5.05 BPF double-free kernel exploit whitepaper.
You can download it from the following link: https://packetstormsecurity.com/files/download/148588/sonyps4505-doublefree.txt
Source: https://packetstormsecurity.com/files/148588/Sony-Playstation-4-5.05-BPF-Double-Free.html