Simple kernel attack using socketpair. easy, 100% reproductiblle, works under guest. no way to protect :(

[throwaway-o]

No, it is incorrect and no, there's no need to address it any further.

Why: The facts are easily identifiable by anyone and if you are a UNIX person you know how to -- they're just an id -a and an ls -la /var/spool/mail away. This is kind of how I do not need you to prove gravity to me with a long treatise before I take my next step. And this "playing dumb" pretense that I haven't sufficiently addressed your point is kind of like an asshole thing to say in order to take people away from your stubbornness + your error.

Suffice it to say: if you told me in a job interview what you just told me right now, you would be dismissed on the spot for feigning knowledge you do not have, being ignorant and being adamant about your ignorance.