From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755762Ab2DHRk6 (ORCPT ); Sun, 8 Apr 2012 13:40:58 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:41227 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753877Ab2DHRky convert rfc822-to-8bit (ORCPT ); Sun, 8 Apr 2012 13:40:54 -0400 MIME-Version: 1.0 In-Reply-To: References: Date: Sun, 8 Apr 2012 19:40:52 +0200 Message-ID: Subject: Re: [REVIEW][PATCH 0/43] Completing the user namespace From: richard -rw- weinberger To: "Eric W. Biederman" Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, Linux Containers , "Serge E. Hallyn" , Andrew Morton , Linus Torvalds , Al Viro , Cyrill Gorcunov Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 8, 2012 at 7:10 AM, Eric W. Biederman wrote: > - Capabilities are localized to the current user namespace making >  it safe to give the initial user in a user namespace all capabilities. > So, this makes LXC and friends ready for hostile environments? IOW a root user (with all capabilities) sitting in his own namespace can no longer ham the host? -- Thanks, //richard From mboxrd@z Thu Jan 1 00:00:00 1970 From: richard -rw- weinberger Subject: Re: [REVIEW][PATCH 0/43] Completing the user namespace Date: Sun, 8 Apr 2012 19:40:52 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, Linux Containers , "Serge E. Hallyn" , Andrew Morton , Linus Torvalds , Al Viro , Cyrill Gorcunov To: "Eric W. Biederman" Return-path: Received: from mail-lb0-f174.google.com ([209.85.217.174]:41227 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753877Ab2DHRky convert rfc822-to-8bit (ORCPT ); Sun, 8 Apr 2012 13:40:54 -0400 In-Reply-To: Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Sun, Apr 8, 2012 at 7:10 AM, Eric W. Biederman wrote: > - Capabilities are localized to the current user namespace making > =A0it safe to give the initial user in a user namespace all capabilit= ies. > So, this makes LXC and friends ready for hostile environments? IOW a root user (with all capabilities) sitting in his own namespace ca= n no longer ham the host? --=20 Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel= " in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html