From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wright Subject: Re: [Drbd-dev] [PATCH 2/2 v2] netlink: kill eff_cap from struct netlink_skb_parms Date: Thu, 3 Mar 2011 15:53:05 -0800 Message-ID: <20110303235305.GY4988@sequoia.sous-sol.org> References: <4D6F6180.5030903@trash.net> <20110303173230.GP4988@sequoia.sous-sol.org> <20110303.105655.189705829.davem@davemloft.net> <20110303201522.GT4988@sequoia.sous-sol.org> <20110303223746.GI25069@barkeeper1-xen.linbit> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Chris Wright , David Miller , linux-fbdev@vger.kernel.org, netdev@vger.kernel.org, linux-security-module@vger.kernel.org, dm-devel@redhat.com Return-path: Content-Disposition: inline In-Reply-To: <20110303223746.GI25069@barkeeper1-xen.linbit> Sender: linux-security-module-owner@vger.kernel.org List-Id: netdev.vger.kernel.org * Lars Ellenberg (lars.ellenberg@linbit.com) wrote: > Last time I checked, current() for connector based netlink message > consumers was the work queue that is used for connector. > > So unless that changed, or my understanding is wrong, current_cap() > inside cn_queue_wrapper(), respectively the d->callback() > will not be the userland sender process' capabilities, but the work > queue capabilities. Yes, you're right. > If so, then this change introduces the possibility for normal users to > send privileged commands to connector based subsystems, even if they > may not be able to bind() to suitable sockets to receive any replies. > > Am I missing something? No, thanks for review. This puts back the async issue.