From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Tripathy Subject: Security Implications of letting customers use their own kernel Date: Wed, 15 Dec 2010 12:26:28 +0000 Message-ID: <4D08B3F4.7020008@abpni.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Hi Everyone, What are the security implications of letting customers install their own kernel? In my own research, I have only seen things that would compromise their own DomU. My main area on concern is to protect all the other DomUs. An area of potential concern is if someone were to build a kernel that enabled "No Execute" or "Disable Execution", could that compromise other DomUs? Or would that just leave their DomU vulnerable to running malicious code? Anyone aware of anything else? Thanks