linux-kernel - Re: fanotify - overall design before I start sending patches

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1248898329.2597.57.camel@localhost>
Date:	Wed, 29 Jul 2009 16:12:09 -0400
From:	Eric Paris <eparis@...hat.com>
To:	Andreas Dilger <adilger@....com>
Cc:	Jamie Lokier <jamie@...reable.org>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, malware-list@...sg.printk.net,
	Valdis.Kletnieks@...edu, greg@...ah.com, jcm@...hat.com,
	douglas.leeder@...hos.com, tytso@....edu, arjan@...radead.org,
	david@...g.hm, jengelh@...ozas.de, aviro@...hat.com,
	mrkafk@...il.com, alexl@...hat.com, jack@...e.cz,
	tvrtko.ursulin@...hos.com, a.p.zijlstra@...llo.nl,
	hch@...radead.org, alan@...rguk.ukuu.org.uk, mmorley@....in,
	pavel@...e.cz
Subject: Re: fanotify - overall design before I start sending patches

On Mon, 2009-07-27 at 12:33 -0600, Andreas Dilger wrote:
> On Jul 25, 2009  01:29 +0100, Jamie Lokier wrote:

> It might also make sense to verify that the process doing the open has
> at least permission to open the file in question (i.e. root) so that
> some unauthorized process cannot just get file handles to arbitrary files.

All current permissions between the listener process and the object are
done.  It's quite possible to get fanotify events where the fd = -EPERM.

-Eric

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/