linux-kernel - Re: [PATCH v2] security: Yama LSM

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Message-ID: <20100623165936.661744f8@lxorguk.ukuu.org.uk>
Date:	Wed, 23 Jun 2010 16:59:36 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Kees Cook <kees.cook@...onical.com>,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v2] security: Yama LSM

> > I actually think this is a flaw in get_task_comm.  (Though actually it's
> > the fault of terminals if they process dangerous escape sequences. Worst
> > case tends to just be confusing output, but that's not important --
> > nothing should spew non-printables regardless.)  Would a patch to
> > get_task_comm be accepted to replace non-printables with "?" or something
> > when filling the buffer?
> 
> Probably makes sense, although you might annoy someone who wants Kanji
> process names in UTF-8 or similar.

The task name is irrelevant, user controlled information. It's not
really ideal for use in security logging.

Alan

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