netdev - Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)

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Message-ID: <alpine.LRH.2.00.1001110811350.25601@tundra.namei.org>
Date:	Mon, 11 Jan 2010 08:11:55 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Pavel Machek <pavel@....cz>
cc:	"Serge E. Hallyn" <serue@...ibm.com>,
	Michael Stone <michael@...top.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	Andi Kleen <andi@...stfloor.org>, David Lang <david@...g.hm>,
	Oliver Hartkopp <socketcan@...tkopp.net>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	Bryan Donlan <bdonlan@...il.com>,
	Evgeniy Polyakov <zbr@...emap.net>,
	"C. Scott Ananian" <cscott@...ott.net>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Bernie Innocenti <bernie@...ewiz.org>,
	Mark Seaborn <mrs@...hic-beasts.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Am?rico Wang <xiyou.wangcong@...il.com>,
	Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
	Samir Bellabes <sam@...ack.fr>,
	Casey Schaufler <casey@...aufler-ca.com>
Subject: Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)

On Fri, 1 Jan 2010, Pavel Machek wrote:

> > Quoting Michael Stone (michael@...top.org):
> > > Implement security_* hooks for socket_create, socket_bind, socket_connect,
> > > socket_sendmsg, and ptrace_access_check which return -EPERM when called from a
> > > process with networking restrictions. Exempt AF_UNIX sockets.
> > > 
> > > Signed-off-by: Michael Stone <michael@...top.org>
> > 
> > Acked-by: Serge Hallyn <serue@...ibm.com>
> 
> For the record: NAK, as it introduces security holes.

Please elaborate.


-- 
James Morris
<jmorris@...ei.org>
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