From patchwork Wed Mar 20 10:44:13 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luis Henriques X-Patchwork-Id: 229340 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) by ozlabs.org (Postfix) with ESMTP id 874362C0085 for ; Wed, 20 Mar 2013 21:44:27 +1100 (EST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1UIGVJ-0002FT-El; Wed, 20 Mar 2013 10:44:21 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtp (Exim 4.76) (envelope-from ) id 1UIGVC-00024h-FM for kernel-team@lists.ubuntu.com; Wed, 20 Mar 2013 10:44:14 +0000 Received: from bl6-54-232.dsl.telepac.pt ([82.155.54.232] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1UIGVC-0005Na-7F; Wed, 20 Mar 2013 10:44:14 +0000 From: Luis Henriques To: Mathias Krause Subject: [ 3.5.y.z extended stable ] Patch "rtnl: fix info leak on RTM_GETLINK request for VF devices" has been added to staging queue Date: Wed, 20 Mar 2013 10:44:13 +0000 Message-Id: <1363776253-5603-1-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 1.8.1.2 X-Extended-Stable: 3.5 Cc: kernel-team@lists.ubuntu.com, "David S. Miller" X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: kernel-team-bounces@lists.ubuntu.com This is a note to let you know that I have just added a patch titled rtnl: fix info leak on RTM_GETLINK request for VF devices to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 4309466c9a5c52702c2c3ece6ceb9f7f0afb0640 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sat, 9 Mar 2013 05:52:20 +0000 Subject: [PATCH] rtnl: fix info leak on RTM_GETLINK request for VF devices commit 84d73cd3fb142bf1298a8c13fd4ca50fd2432372 upstream. Initialize the mac address buffer with 0 as the driver specific function will probably not fill the whole buffer. In fact, all in-kernel drivers fill only ETH_ALEN of the MAX_ADDR_LEN bytes, i.e. 6 of the 32 possible bytes. Therefore we currently leak 26 bytes of stack memory to userland via the netlink interface. Signed-off-by: Mathias Krause Signed-off-by: David S. Miller Signed-off-by: Luis Henriques --- net/core/rtnetlink.c | 1 + 1 file changed, 1 insertion(+) -- 1.8.1.2 diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 6c50ac0..8f37bec 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -981,6 +981,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, * report anything. */ ivi.spoofchk = -1; + memset(ivi.mac, 0, sizeof(ivi.mac)); if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) break; vf_mac.vf =