From owner-freebsd-security@FreeBSD.ORG Sun Jun 18 08:27:23 2006 Return-Path: X-Original-To: freebsd-security@freebsd.org Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E9E7B16A479 for ; Sun, 18 Jun 2006 08:27:23 +0000 (UTC) (envelope-from neiro21@gmail.com) Received: from py-out-1112.google.com (py-out-1112.google.com [64.233.166.183]) by mx1.FreeBSD.org (Postfix) with ESMTP id 817CC43D45 for ; Sun, 18 Jun 2006 08:27:23 +0000 (GMT) (envelope-from neiro21@gmail.com) Received: by py-out-1112.google.com with SMTP id i75so1009466pye for ; Sun, 18 Jun 2006 01:27:22 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=k6R6qeLNax9X+U6I0vfobxKnq5+QskCf/O+J16gkF3bfH5HdgLzHpJldaX59pKDqIuC8EaVlvsaRbBEoNPJvzCB8r40uJwT1kPTVRcWBGPTamTlrQ2YL7odkD50j88kKR6vvqpLBYsqOeF1snCmgrLInEj34iDAg20hgZkqcWVc= Received: by 10.35.82.15 with SMTP id j15mr6824889pyl; Sun, 18 Jun 2006 01:27:22 -0700 (PDT) Received: by 10.35.125.6 with HTTP; Sun, 18 Jun 2006 01:27:22 -0700 (PDT) Message-ID: <3bcb4e3f0606180127m3c4fdb13n2b42deb881b7bdc6@mail.gmail.com> Date: Sun, 18 Jun 2006 12:27:22 +0400 From: "Nick Borisov" To: freebsd-security@freebsd.org In-Reply-To: <3bcb4e3f0606180056o63424cc0g5c121443e45fa333@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <3bcb4e3f0606180056o63424cc0g5c121443e45fa333@mail.gmail.com> Subject: memory pages nulling when releasing X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Jun 2006 08:27:24 -0000 Hello everyone! Could you tell me if FreeBSD supports memory page nulling when releasing it to prevent unauthorized access to data left in the page after it's allocated again. If it does, what sys calls etc provide that? IMHO this is an important issue when operating data with different sensivity levels. Thanks in advance. Nick