netfilter: nft_compat: restrict raw table targets/matches

xt targets and matches declaring .table = "raw" (CT, NOTRACK) rely on
only ever running in the legacy raw table's prerouting/output chains,
ahead of conntrack. nft_compat_chain_validate_dependency() already
enforces this kind of correspondence for "nat" by requiring the chain
type to actually be NAT, but did nothing for "raw": a rule wrapping
the CT target could be loaded into any hook and any priority via
nft_compat, including after the real conntrack hook has already run.

The CT target attaches a conntrack template to the skb when none is
set yet.

Require that a "raw" table dependency actually matches what xtables
enforces via the implict/builtin table dependency.

Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables")
Assisted-by: LLM
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions