linux-kernel - [PATCH] netfilter: Don't leak 'exp' in ctnetlink_create

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Message-ID: <alpine.LNX.2.00.1212262246390.23814@swampdragon.chaosbits.net>
Date:	Wed, 26 Dec 2012 22:49:40 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	netfilter@...r.kernel.org
cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	coreteam@...filter.org, netfilter-devel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jay Schulist <jschlst@...ba.org>,
	Harald Welte <laforge@...monks.org>
Subject: [PATCH] netfilter: Don't leak 'exp' in ctnetlink_create_expect()

'if ((!help) && (!cda[CTA_EXPECT_TIMEOUT]))' then we should remember
to free 'exp' that was allocated by 'nf_ct_expect_alloc()' by jumping
to the 'err_out' label rather than the 'out' label in
ctnetlink_create_expect().
This patch should get rid of the leak.

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 net/netfilter/nf_conntrack_netlink.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

 note: compile tested only.

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 4e078cd..627b0e5 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -2624,7 +2624,7 @@ ctnetlink_create_expect(struct net *net, u16 zone,
 	if (!help) {
 		if (!cda[CTA_EXPECT_TIMEOUT]) {
 			err = -EINVAL;
-			goto out;
+			goto err_out;
 		}
 		exp->timeout.expires =
 		  jiffies + ntohl(nla_get_be32(cda[CTA_EXPECT_TIMEOUT])) * HZ;
-- 
1.7.1


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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