netfilter: nf_tables: fix nft_trans type confusion

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[ Upstream commit e3c361b8ac ]

nft_trans_FOO objects all share a common nft_trans base structure, but
trailing fields depend on the real object size. Access is only safe after
trans->msg_type check.

Check for rule type first.  Found by code inspection.

Fixes: 1a94e38d25 ("netfilter: nf_tables: add NFTA_RULE_ID attribute")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Florian Westphal 2023-05-11 14:15:15 +02:00 • committed by Greg Kroah-Hartman

parent addaba6801

commit b0cc763806

1 changed files with 1 additions and 3 deletions

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net/netfilter/nf_tables_api.c

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