With the NFPROTO_* constants introduced by commit 7e9c6e ("netfilter: Introduce
NFPROTO_* constants"), it is too easy to confuse PF_* and NFPROTO_* constants
in new protocols.
Signed-off-by: Alban Crequy <alban.crequy@xxxxxxxxxxxxxxx>
Reviewed-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
Reviewed-by: Vincent Sanders <vincent.sanders@xxxxxxxxxxxxxxx>
---
net/netfilter/core.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index e1b7e05..4f16552 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -67,6 +67,11 @@ int nf_register_hook(struct nf_hook_ops *reg)
struct nf_hook_ops *elem;
int err;
+ if (reg->pf >= NFPROTO_NUMPROTO || reg->hooknum >= NF_MAX_HOOKS) {
+ BUG();
+ return 1;
+ }
+
err = mutex_lock_interruptible(&nf_hook_mutex);
if (err < 0)
return err;
--
1.7.2.5
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