| commit | a9e8503def0fd4ed89ade1f61c315f904581d439 | [log] [tgz] |
|---|---|---|
| author | Florian Westphal <fw@strlen.de> | Sat Jan 29 17:13:23 2022 +0100 |
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | Fri Feb 04 05:38:15 2022 +0100 |
| tree | 7e7678e27bded2e65072d96af8f9a227f5cca3ab | |
| parent | 77b337196a9d87f3d6bb9b07c0436ecafbffda1e [diff] |
netfilter: nft_payload: don't allow th access for fragments
Loads relative to ->thoff naturally expect that this points to the
transport header, but this is only true if pkt->fragoff == 0.
This has little effect for rulesets with connection tracking/nat because
these enable ip defra. For other rulesets this prevents false matches.
Fixes: 96518518cc41 ("netfilter: add nftables")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>