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Date: Wed, 7 Sep 2011 13:39:33 +0400
From: Vasiliy Kulikov <>
Subject: Re: /tmp fs type

On Wed, Sep 07, 2011 at 13:15 +0400, Vasiliy Kulikov wrote:
> While we have an option to setup /tmp as tmpfs, we probably should
> support bind mounts for /tmp (and /home?) to deny creating links to sxid
> binaries:

Well, not only sxid binaries.  sxid binaries linking is a dangerous
attack vector, but it's not the only one.

If we care about sxid binaries, we can create bind mounts for
/{usr/,}{s,}bin/ as user writable directories may contain /var/tmp/,
probably something in /var/spool/.

Vasiliy Kulikov - bringing security into open computing environments

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