From mboxrd@z Thu Jan 1 00:00:00 1970 From: Loganaden Velvindron Subject: [PATCH net-next ] net: ipv4: memset addr before calling copy_to_user() Date: Sun, 8 Nov 2015 22:52:36 -0800 Message-ID: <20151109065236.GA2271@mx.elandsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: netdev@vger.kernel.org Return-path: Received: from ns1.qubic.net ([208.69.177.116]:55282 "EHLO mx.elandsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750814AbbKIGwj (ORCPT ); Mon, 9 Nov 2015 01:52:39 -0500 Received: from mx.elandsys.com (IDENT:logan@localhost [127.0.0.1]) by mx.elandsys.com (8.14.5/8.14.5) with ESMTP id tA96qbx7012084 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 8 Nov 2015 22:52:38 -0800 (PST) Received: (from logan@localhost) by mx.elandsys.com (8.14.5/8.14.5/Submit) id tA96qaaC018261 for netdev@vger.kernel.org; Sun, 8 Nov 2015 22:52:36 -0800 (PST) Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: zero addr before calling copy_to_user() Signed-off-by: Loganaden Velvindron --- net/ipv4/ip_sockglue.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index c3c359a..d7a5a8b 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1373,6 +1373,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname, case IP_MULTICAST_IF: { struct in_addr addr; + memset(&addr, 0, sizeof(addr)); len = min_t(unsigned int, len, sizeof(struct in_addr)); addr.s_addr = inet->mc_addr; release_sock(sk); -- 2.6.2