Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261929AbVDOTPn (ORCPT ); Fri, 15 Apr 2005 15:15:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261931AbVDOTPn (ORCPT ); Fri, 15 Apr 2005 15:15:43 -0400 Received: from wproxy.gmail.com ([64.233.184.206]:4750 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S261929AbVDOTPg convert rfc822-to-8bit (ORCPT ); Fri, 15 Apr 2005 15:15:36 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=kX5QfQJMwllUeS2pEDbOcbFXlNCazODT7S83uwVZbYPo6BgBm2HFk4w/+r9SrkdueB8DR6jz2gTsAx2rot4U499OuG/Ito42RpBpgMaF0w2G2Vvzokq1TKv3nF/OBTzF5KVwZKWwH65R+b+s1ha/z4JBbBL0gCoffzDdGat4Qmg= Message-ID: <17d7988050415121537c8fac1@mail.gmail.com> Date: Fri, 15 Apr 2005 19:15:36 +0000 From: Allison Reply-To: Allison To: linux-kernel@vger.kernel.org Subject: Re: Kernel Rootkits Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 963 Lines: 27 Isn't the kernel code segment marked read-only ? How can the module write into the function text in the kernel ? Shouldn't this cause some kind of protection fault ? thanks, Allison Lee Revell wrote: > On Fri, 2005-04-15 at 18:15 +0000, Allison wrote: > > Once these are loaded into the kernel, is there no way the kernel > > functions can be protected ? > > No. If the attacker can load arbitrary code into the kernel, game over. > Think about it. > > Lee > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/