From: xystrus <xystrus@haxm.com>
To: linux-kernel@vger.kernel.org
Subject: Re: link() security
Date: Sat, 13 Apr 2002 13:02:33 -0400 [thread overview]
Message-ID: <20020413130233.A4743@pizzashack.org> (raw)
In-Reply-To: <20020411181524.A1463@figure1.int.wirex.com> <E16wQsU-0000cb-00@the-village.bc.nu>
On Sat, Apr 13, 2002 at 05:59:54PM +0100, Alan Cox wrote:
> > http://openwall.com. Work based on Solar Designer's Openwall patch has
> > been brought forward to more recent 2.4 and 2.5 kernels. Both the
> > following projects implement the Openwall secure link feature:
> >
> > http://grsecurity.net
> > http://lsm.immunix.org
> >
> > This can break some applications that make assumptions wrt. link(2)
> > (Courier MTA for example).
>
> How practical is it to make this a mount option and to do so cleanly ?
Perhaps two options: one to allow creation of the link only when the
UIDs match; and the other to allow the link when GIDs match, to keep
Courier happy?
next prev parent reply other threads:[~2002-04-13 17:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-11 23:21 link() security xystrus
2002-04-12 1:15 ` Chris Wright
2002-04-13 16:59 ` Alan Cox
2002-04-13 17:02 ` xystrus [this message]
2002-04-14 1:49 ` Chris Wright
2002-04-15 14:44 ` Patrick J. LoPresti
2002-04-15 19:25 ` H. Peter Anvin
2002-04-15 22:48 ` Alan Cox
2002-04-15 23:05 ` H. Peter Anvin
2002-04-15 23:28 ` Alan Cox
2002-04-15 23:14 ` H. Peter Anvin
2002-04-16 0:01 ` Kurt Wall
2002-04-15 21:41 ` xystrus
2002-05-06 5:00 ` Albert D. Cahalan
-- strict thread matches above, loose matches on Subject: below --
2002-04-13 17:48 Hank Leininger
2002-04-15 19:36 Chris Adams
2002-04-15 19:55 ` H. Peter Anvin
2002-04-15 20:36 ` Patrick J. LoPresti
2002-04-16 1:37 ` H. Peter Anvin
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