From eaae4fa45e0f4cd1da0f00ae93551edb1002b2b9 Mon Sep 17 00:00:00 2001 From: Yasuyuki Kozakai Date: Wed, 9 Nov 2005 12:58:46 -0800 Subject: [PATCH] [NETFILTER]: refcount leak of proto when ctnetlink dumping tuple Signed-off-by: Yasuyuki Kozakai Signed-off-by: Harald Welte Signed-off-by: David S. Miller --- net/ipv4/netfilter/ip_conntrack_netlink.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/ipv4/netfilter/ip_conntrack_netlink.c b/net/ipv4/netfilter/ip_conntrack_netlink.c index 431a446994f6..02f303cf201e 100644 --- a/net/ipv4/netfilter/ip_conntrack_netlink.c +++ b/net/ipv4/netfilter/ip_conntrack_netlink.c @@ -58,14 +58,17 @@ ctnetlink_dump_tuples_proto(struct sk_buff *skb, const struct ip_conntrack_tuple *tuple) { struct ip_conntrack_protocol *proto; + int ret = 0; NFA_PUT(skb, CTA_PROTO_NUM, sizeof(u_int8_t), &tuple->dst.protonum); proto = ip_conntrack_proto_find_get(tuple->dst.protonum); - if (proto && proto->tuple_to_nfattr) - return proto->tuple_to_nfattr(skb, tuple); + if (likely(proto && proto->tuple_to_nfattr)) { + ret = proto->tuple_to_nfattr(skb, tuple); + ip_conntrack_proto_put(proto); + } - return 0; + return ret; nfattr_failure: return -1; -- GitLab