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[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 <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-03-12 20:32:47 -08:00 committed by David S. Miller
parent 57ddd5c180
commit 406dbfc9ae
1 changed files with 5 additions and 1 deletions
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6
net/netfilter/nfnetlink_queue.c
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@ -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));
}