Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752677AbdFEQXq (ORCPT ); Mon, 5 Jun 2017 12:23:46 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:58788 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752656AbdFEQXl (ORCPT ); Mon, 5 Jun 2017 12:23:41 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Dumazet , Andrey Konovalov , "David S. Miller" Subject: [PATCH 4.9 13/94] sctp: do not inherit ipv6_{mc|ac|fl}_list from parent Date: Mon, 5 Jun 2017 18:16:49 +0200 Message-Id: <20170605153103.744726726@linuxfoundation.org> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170605153103.156843111@linuxfoundation.org> References: <20170605153103.156843111@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 999 Lines: 34 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Dumazet [ Upstream commit fdcee2cbb8438702ea1b328fb6e0ac5e9a40c7f8 ] SCTP needs fixes similar to 83eaddab4378 ("ipv6/dccp: do not inherit ipv6_mc_list from parent"), otherwise bad things can happen. Signed-off-by: Eric Dumazet Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/sctp/ipv6.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/sctp/ipv6.c +++ b/net/sctp/ipv6.c @@ -678,6 +678,9 @@ static struct sock *sctp_v6_create_accep newnp = inet6_sk(newsk); memcpy(newnp, np, sizeof(struct ipv6_pinfo)); + newnp->ipv6_mc_list = NULL; + newnp->ipv6_ac_list = NULL; + newnp->ipv6_fl_list = NULL; rcu_read_lock(); opt = rcu_dereference(np->opt);