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netfilter: nft_compat: check extension hook mask only if set 

If the x_tables extension comes with no hook mask, skip this validation.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2017-07-18 20:03:05 +02:00
parent 3840538ad3
commit f7fb77fc12
1 changed files with 2 additions and 2 deletions
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4
net/netfilter/nft_compat.c
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@ -305,7 +305,7 @@ static int nft_target_validate(const struct nft_ctx *ctx,
const struct nf_hook_ops *ops = &basechain->ops[0];
hook_mask = 1 << ops->hooknum;
if (!(hook_mask & target->hooks))
if (target->hooks && !(hook_mask & target->hooks))
return -EINVAL;
ret = nft_compat_chain_validate_dependency(target->table,
@ -484,7 +484,7 @@ static int nft_match_validate(const struct nft_ctx *ctx,
const struct nf_hook_ops *ops = &basechain->ops[0];
hook_mask = 1 << ops->hooknum;
if (!(hook_mask & match->hooks))
if (match->hooks && !(hook_mask & match->hooks))
return -EINVAL;
ret = nft_compat_chain_validate_dependency(match->table,