Message ID | 1474472107-12992-6-git-send-email-aconole@bytheb.org |
---|---|
State | Awaiting Upstream, archived |
Delegated to: | David Miller |
Headers | show |
diff --git a/net/netfilter/core.c b/net/netfilter/core.c index c8faf81..67b7428 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -89,6 +89,11 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg) struct nf_hook_entry *entry; struct nf_hook_ops *elem; + if (reg->pf == NFPROTO_NETDEV && + (reg->hooknum != NF_NETDEV_INGRESS || + !reg->dev || dev_net(reg->dev) != net)) + return -EINVAL; + entry = kmalloc(sizeof(*entry), GFP_KERNEL); if (!entry) return -ENOMEM;
This commit adds an upfront check for sane values to be passed when registering a netfilter hook. This will be used in a future patch for a simplified hook list traversal. Signed-off-by: Aaron Conole <aconole@bytheb.org> --- net/netfilter/core.c | 5 +++++ 1 file changed, 5 insertions(+)