Pablo Neira Ayuso a600c1ebc4 netfilter: nft_compat: restrict match/target protocol to u16
[ Upstream commit d694b754894c93fb4d71a7f3699439dec111decc ]

xt_check_{match,target} expects u16, but NFTA_RULE_COMPAT_PROTO is u32.

NLA_POLICY_MAX(NLA_BE32, 65535) cannot be used because .max in
nla_policy is s16, see 3e48be05f3c7 ("netlink: add attribute range
validation to policy").

Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-16 19:10:51 +01:00
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