CREDITS:
vulnerability author: Max Kellermann <max.kellermann@ionos.com>
max kellermann explanation: https://dirtypipe.cm4all.com/
RESOURCES:
PAGE CACHE: https://manybutfinite.com/post/page-cache-the-affair-between-memory-and-files/
PIPE: https://github.com/angrave/SystemProgramming/wiki/Pipes%2C-Part-1%3A-Introduction-to-pipes
https://github.com/angrave/SystemProgramming/wiki/Pipes%2C-Part-2%3A-Pipe-programming-secrets
SPLICE SYSCALL: https://man7.org/linux/man-pages/man2/splice.2.html#:~:text=splice()%20moves%20data%20between,must%20refer%20to%20a%20pipe.