tree 64fcef16df64c35c2f3ceca20982d3723a2637c4
parent 2061dcd6bff8b774b4fac8b0739b6be3f87bc9f2
author Pablo Neira Ayuso <pablo@netfilter.org> 1421246037 +0100
committer Pablo Neira Ayuso <pablo@netfilter.org> 1421675559 +0100

netfilter: nf_tables: validate hooks in NAT expressions

The user can crash the kernel if it uses any of the existing NAT
expressions from the wrong hook, so add some code to validate this
when loading the rule.

This patch introduces nft_chain_validate_hooks() which is based on
an existing function in the bridge version of the reject expression.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>