From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754031AbdLVIrm (ORCPT ); Fri, 22 Dec 2017 03:47:42 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:60256 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751826AbdLVIrh (ORCPT ); Fri, 22 Dec 2017 03:47:37 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeffy Chen , Pablo Neira Ayuso , Sasha Levin Subject: [PATCH 3.18 10/38] netfilter: nfnl_cthelper: Fix memory leak Date: Fri, 22 Dec 2017 09:46:23 +0100 Message-Id: <20171222084452.263767387@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171222084451.623495387@linuxfoundation.org> References: <20171222084451.623495387@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 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jeffy Chen [ Upstream commit f83bf8da1135ca635aac8f062cad3f001fcf3a26 ] We have memory leaks of nf_conntrack_helper & expect_policy. Signed-off-by: Jeffy Chen Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/netfilter/nfnetlink_cthelper.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) --- a/net/netfilter/nfnetlink_cthelper.c +++ b/net/netfilter/nfnetlink_cthelper.c @@ -216,7 +216,7 @@ nfnl_cthelper_create(const struct nlattr ret = nfnl_cthelper_parse_expect_policy(helper, tb[NFCTH_POLICY]); if (ret < 0) - goto err; + goto err1; strncpy(helper->name, nla_data(tb[NFCTH_NAME]), NF_CT_HELPER_NAME_LEN); helper->data_len = ntohl(nla_get_be32(tb[NFCTH_PRIV_DATA_LEN])); @@ -247,10 +247,12 @@ nfnl_cthelper_create(const struct nlattr ret = nf_conntrack_helper_register(helper); if (ret < 0) - goto err; + goto err2; return 0; -err: +err2: + kfree(helper->expect_policy); +err1: kfree(helper); return ret; } @@ -696,6 +698,8 @@ nfnl_cthelper_del(struct sock *nfnl, str found = true; nf_conntrack_helper_unregister(cur); + kfree(cur->expect_policy); + kfree(cur); } } /* Make sure we return success if we flush and there is no helpers */ @@ -759,6 +763,8 @@ static void __exit nfnl_cthelper_exit(vo continue; nf_conntrack_helper_unregister(cur); + kfree(cur->expect_policy); + kfree(cur); } } }