netfilter: nft_payload: reject offsets exceeding 65535 bytes

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Large offsets were rejected based on netlink policy, but blamed commit
removed the policy without updating nft_payload_inner_init() to use the
truncation-check helper.

Silent truncation is not a problem, but not wanted either, so add a
check.

Fixes: 077dc4a275 ("netfilter: nft_payload: extend offset to 65535 bytes")
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Florian Westphal 2026-06-18 06:58:24 +02:00 • committed by Pablo Neira Ayuso

parent 4a597a87e2

commit 213be32f46

1 changed files with 13 additions and 3 deletions

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net/netfilter/nft_payload.c

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