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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 1/9] netfilter: nf_tables: fix a missing check of nla_put_failure
Date: Sat, 29 Dec 2018 13:57:55 +0100
Message-ID: <20181229125803.7415-2-pablo@netfilter.org> (raw)
In-Reply-To: <20181229125803.7415-1-pablo@netfilter.org>

From: Kangjie Lu <kjlu@umn.edu>

If nla_nest_start() may fail. The fix checks its return value and goes
to nla_put_failure if it fails.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nf_tables_api.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index fec814dace5a..2b0a93300dd7 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5727,6 +5727,8 @@ static int nf_tables_fill_flowtable_info(struct sk_buff *skb, struct net *net,
 		goto nla_put_failure;
 
 	nest = nla_nest_start(skb, NFTA_FLOWTABLE_HOOK);
+	if (!nest)
+		goto nla_put_failure;
 	if (nla_put_be32(skb, NFTA_FLOWTABLE_HOOK_NUM, htonl(flowtable->hooknum)) ||
 	    nla_put_be32(skb, NFTA_FLOWTABLE_HOOK_PRIORITY, htonl(flowtable->priority)))
 		goto nla_put_failure;
-- 
2.11.0

  reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-29 12:57 [PATCH 0/9] Netfilter fixes for net Pablo Neira Ayuso
2018-12-29 12:57 ` Pablo Neira Ayuso [this message]
2018-12-29 12:57 ` [PATCH 2/9] netfilter: nf_conncount: replace CONNCOUNT_LOCK_SLOTS with CONNCOUNT_SLOTS Pablo Neira Ayuso
2018-12-29 12:57 ` [PATCH 3/9] netfilter: nf_conncount: don't skip eviction when age is negative Pablo Neira Ayuso
2018-12-29 12:57 ` [PATCH 4/9] netfilter: nf_conncount: split gc in two phases Pablo Neira Ayuso
2018-12-29 12:57 ` [PATCH 5/9] netfilter: nf_conncount: restart search when nodes have been erased Pablo Neira Ayuso
2018-12-29 12:58 ` [PATCH 6/9] netfilter: nf_conncount: merge lookup and add functions Pablo Neira Ayuso
2018-12-29 12:58 ` [PATCH 7/9] netfilter: nf_conncount: move all list iterations under spinlock Pablo Neira Ayuso
2018-12-29 12:58 ` [PATCH 8/9] netfilter: nf_conncount: speculative garbage collection on empty lists Pablo Neira Ayuso
2018-12-29 12:58 ` [PATCH 9/9] netfilter: nf_conncount: fix argument order to find_next_bit Pablo Neira Ayuso
2018-12-29 22:33 ` [PATCH 0/9] Netfilter fixes for net David Miller

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