From f5553c19ff9058136e7082c0b1f4268e705ea538 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 29 Jan 2015 19:08:09 +0100 Subject: [PATCH] netfilter: nf_tables: fix leaks in error path of nf_tables_newchain() Release statistics and module refcount on memory allocation problems. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index b543606..1ff04bc 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -1264,8 +1264,10 @@ static int nf_tables_newchain(struct sock *nlsk, struct sk_buff *skb, nft_ctx_init(&ctx, skb, nlh, afi, table, chain, nla); trans = nft_trans_alloc(&ctx, NFT_MSG_NEWCHAIN, sizeof(struct nft_trans_chain)); - if (trans == NULL) + if (trans == NULL) { + free_percpu(stats); return -ENOMEM; + } nft_trans_chain_stats(trans) = stats; nft_trans_chain_update(trans) = true; @@ -1321,8 +1323,10 @@ static int nf_tables_newchain(struct sock *nlsk, struct sk_buff *skb, hookfn = type->hooks[hooknum]; basechain = kzalloc(sizeof(*basechain), GFP_KERNEL); - if (basechain == NULL) + if (basechain == NULL) { + module_put(type->owner); return -ENOMEM; + } if (nla[NFTA_CHAIN_COUNTERS]) { stats = nft_stats_alloc(nla[NFTA_CHAIN_COUNTERS]); -- 2.7.4