Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752188AbdFHEcu (ORCPT ); Thu, 8 Jun 2017 00:32:50 -0400 Received: from cmccmta3.chinamobile.com ([221.176.66.81]:19830 "EHLO cmccmta3.chinamobile.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750860AbdFHEct (ORCPT ); Thu, 8 Jun 2017 00:32:49 -0400 X-RM-TRANSID: 2ee95938d36d6c0-8c6ef X-RM-SPAM-FLAG: 00000000 X-RM-TRANSID: 2ee15938d36cee2-90d2b From: Haishuang Yan To: "=David S. Miller" , Alexey Kuznetsov , James Morris , Hideaki YOSHIFUJI , Patrick McHardy Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Haishuang Yan , Pravin B Shelar Subject: [PATCH v3 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Date: Thu, 8 Jun 2017 12:32:43 +0800 Message-Id: <1496896364-27153-1-git-send-email-yanhaishuang@cmss.chinamobile.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 820 Lines: 33 When ip_tunnel_rcv fails, the tun_dst won't be freed, so call dst_release to free it in error code path. CC: Pravin B Shelar Fixes: 2e15ea390e6f ("ip_gre: Add support to collect tunnel metadata.") Signed-off-by: Haishuang Yan --- Changes in v2: - Add the the missing Fixes information Changes in v3: - Free tun_dst from error code path --- net/ipv4/ip_tunnel.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index b878ecb..0f1d876 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -446,6 +446,8 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb, return 0; drop: + if (tun_dst) + dst_release((struct dst_entry *)tun_dst); kfree_skb(skb); return 0; } -- 1.8.3.1