From: Kangjie Lu <kjlu@umn.edu>
To: kjlu@umn.edu
Cc: pakki001@umn.edu, Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
Florian Westphal <fw@strlen.de>,
"David S. Miller" <davem@davemloft.net>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] netfilter: fix a missing check of nla put failure
Date: Fri, 21 Dec 2018 00:46:23 -0600 [thread overview]
Message-ID: <20181221064623.59988-1-kjlu@umn.edu> (raw)
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>
---
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 2e61aab6ed73..bc1b9814f2ee 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -5689,6 +5689,8 @@ 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;
--
2.17.2 (Apple Git-113)
next reply other threads:[~2018-12-21 6:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 6:46 Kangjie Lu [this message]
2018-12-29 1:50 ` [PATCH] netfilter: fix a missing check of nla put failure Pablo Neira Ayuso
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