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Date: Tue, 18 Apr 2017 14:40:57 +0100
From: Alan Cox <>
To: Greg KH <>
Cc: Matt Brown <>,,,,,
Subject: Re: [PATCH 1/4] added SECURITY_TIOCSTI_RESTRICT kernel config

> Since tty sessions are usually separated by different users, how would
> they have the same one and yet need something like this?
> Also, why not put this in the tty config section?

The normal attack use case people argue about is a rogue process on the
users machine sitting there waiting until the user has logged in to a
remote machine and is idle and then doing stuff.

Attackers of course don't bother doing that because it's easier to get
the user to run a different ssh client instead.


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