From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Petr Baudis <pasky@suse.cz>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
akpm@osdl.org, viro@zeniv.linux.org.uk, alan@lxorguk.ukuu.org.uk,
tytso@mit.edu, tigran@veritas.com
Subject: Re: [RFC/PATCH] revoke/frevoke system calls V2
Date: Thu, 27 Jul 2006 21:10:36 +0300 [thread overview]
Message-ID: <1154023836.7190.3.camel@ubuntu> (raw)
In-Reply-To: <20060727180634.GA28962@pasky.or.cz>
On Thu, 2006-07-27 at 20:06 +0200, Petr Baudis wrote:
> Make that setuid root or just create log file owned by you and make root
> run it. Should be innocent enough, right?
>
> Well, except that you can revoke the log file before the shadow file is
> opened, at which point open() probably reuses the fd and the program
> conveniently logs to /etc/shadow.
No, the fd is leaked on purpose to avoid recycling. See revoke_fds for
details.
next prev parent reply other threads:[~2006-07-27 18:10 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-27 14:25 [RFC/PATCH] revoke/frevoke system calls V2 Pekka J Enberg
2006-07-27 15:07 ` Alan Cox
2006-07-27 15:33 ` Pekka Enberg
2006-07-27 16:09 ` Alan Cox
2006-07-27 16:01 ` Pekka J Enberg
2006-07-27 16:30 ` Alan Cox
2006-07-27 17:07 ` Pekka J Enberg
2006-07-27 18:27 ` Pekka Enberg
2006-07-27 16:41 ` Ulrich Drepper
2006-07-27 17:05 ` Pekka J Enberg
2006-07-27 17:13 ` Ulrich Drepper
2006-07-27 17:33 ` H. Peter Anvin
2006-07-27 17:44 ` Ulrich Drepper
2006-07-27 18:00 ` H. Peter Anvin
2006-07-27 17:33 ` Alan Cox
2006-07-27 17:33 ` O_CAREFUL flag to disable open() side effects H. Peter Anvin
2006-07-27 17:43 ` Russell King
2006-07-27 17:50 ` Ulrich Drepper
2006-07-27 18:05 ` Alan Cox
2006-07-27 18:03 ` H. Peter Anvin
2006-07-27 18:14 ` Joshua Hudson
2006-08-05 21:05 ` [RFC/PATCH] revoke/frevoke system calls V2 Pavel Machek
2006-07-27 18:06 ` Petr Baudis
2006-07-27 18:10 ` Pekka Enberg [this message]
2006-07-27 19:30 ` Horst H. von Brand
2006-07-28 3:40 ` Pekka J Enberg
2006-07-27 18:34 ` Alan Cox
2006-08-05 12:29 ` Pavel Machek
2006-08-07 5:42 ` Pekka J Enberg
2006-08-07 8:17 ` Edgar Toernig
2006-08-07 9:51 ` Pekka Enberg
2006-08-07 20:41 ` Edgar Toernig
2006-08-07 22:24 ` Chase Venters
2006-08-08 12:15 ` Alan Cox
2006-08-09 8:41 ` Edgar Toernig
2006-08-09 10:39 ` Alan Cox
2006-08-09 18:00 ` Edgar Toernig
2006-08-09 18:36 ` Alan Cox
2006-08-09 19:13 ` Pekka Enberg
2006-08-09 20:08 ` Edgar Toernig
2006-08-09 21:29 ` Edgar Toernig
2006-08-11 7:52 ` Helge Hafting
2006-08-07 22:52 ` David Wagner
2006-08-07 22:56 ` Daniel Jacobowitz
2006-08-07 23:12 ` Chase Venters
2006-08-08 12:16 ` Pekka Enberg
2006-08-08 16:02 ` Kari Hurtta
2006-08-08 21:54 ` Theodore Tso
2006-08-09 6:32 ` Pekka Enberg
2006-08-08 12:13 ` Alan Cox
2006-08-08 12:29 ` Alan Cox
2006-08-08 12:31 ` Pekka Enberg
2006-08-08 12:57 ` Pavel Machek
2006-08-08 14:14 ` Alan Cox
2006-08-08 13:57 ` Pavel Machek
2006-08-09 8:41 ` Edgar Toernig
2006-08-09 10:42 ` Alan Cox
2006-08-09 18:00 ` Edgar Toernig
2006-08-09 18:35 ` Alan Cox
2006-08-09 19:14 ` Pekka Enberg
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