From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753600AbdLMCY3 (ORCPT ); Tue, 12 Dec 2017 21:24:29 -0500 Received: from omzsmtpe01.verizonbusiness.com ([199.249.25.210]:1544 "EHLO omzsmtpe01.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753560AbdLMCAc (ORCPT ); Tue, 12 Dec 2017 21:00:32 -0500 From: alexander.levin@verizon.com Cc: Liping Zhang , Pablo Neira Ayuso , alexander.levin@verizon.com X-Host: endeavour.tdc.vzwcorp.com To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" Subject: [PATCH AUTOSEL for 4.4 37/59] netfilter: nfnetlink_queue: fix secctx memory leak Thread-Topic: [PATCH AUTOSEL for 4.4 37/59] netfilter: nfnetlink_queue: fix secctx memory leak Thread-Index: AQHTc7XilzFP3NrVSke4Ycu527hWhg== Date: Wed, 13 Dec 2017 01:58:35 +0000 Message-ID: <20171213015817.6950-37-alexander.levin@verizon.com> References: <20171213015817.6950-1-alexander.levin@verizon.com> In-Reply-To: <20171213015817.6950-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id vBD2OXSY018287 From: Liping Zhang [ Upstream commit 77c1c03c5b8ef28e55bb0aff29b1e006037ca645 ] We must call security_release_secctx to free the memory returned by security_secid_to_secctx, otherwise memory may be leaked forever. Fixes: ef493bd930ae ("netfilter: nfnetlink_queue: add security context information") Signed-off-by: Liping Zhang Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nfnetlink_queue.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index 861c6615253b..f6837f9b6d6c 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -390,7 +390,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, GFP_ATOMIC); if (!skb) { skb_tx_error(entskb); - return NULL; + goto nlmsg_failure; } nlh = nlmsg_put(skb, 0, 0, @@ -399,7 +399,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, if (!nlh) { skb_tx_error(entskb); kfree_skb(skb); - return NULL; + goto nlmsg_failure; } nfmsg = nlmsg_data(nlh); nfmsg->nfgen_family = entry->state.pf; @@ -542,12 +542,17 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, } nlh->nlmsg_len = skb->len; + if (seclen) + security_release_secctx(secdata, seclen); return skb; nla_put_failure: skb_tx_error(entskb); kfree_skb(skb); net_err_ratelimited("nf_queue: error creating packet message\n"); +nlmsg_failure: + if (seclen) + security_release_secctx(secdata, seclen); return NULL; } -- 2.11.0