From 406dbfc9ae0e6b7eb4da4a52c0a6556a0d7e6a2f Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Sun, 12 Mar 2006 20:32:47 -0800 Subject: [PATCH] [NETFILTER]: nfnetlink_queue: fix possible NULL-ptr dereference Fix NULL-ptr dereference when a config message for a non-existant queue containing only an NFQA_CFG_PARAMS attribute is received. Coverity #433 Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nfnetlink_queue.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index cac38b2e147..2cf5fb8322c 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -928,8 +928,12 @@ nfqnl_recv_config(struct sock *ctnl, struct sk_buff *skb, if (nfqa[NFQA_CFG_PARAMS-1]) { struct nfqnl_msg_config_params *params; - params = NFA_DATA(nfqa[NFQA_CFG_PARAMS-1]); + if (!queue) { + ret = -ENOENT; + goto out_put; + } + params = NFA_DATA(nfqa[NFQA_CFG_PARAMS-1]); nfqnl_set_mode(queue, params->copy_mode, ntohl(params->copy_range)); } -- 2.20.1