netfilter: nft_compat: restrict match/target protocol to u16

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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 3e48be05f3 ("netlink: add attribute range
validation to policy").

Fixes: 0ca743a559 ("netfilter: nf_tables: add compatibility layer for x_tables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Pablo Neira Ayuso 2024-02-02 00:05:23 +01:00

parent 292781c3c5

commit d694b75489

1 changed files with 7 additions and 1 deletions

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net/netfilter/nft_compat.c

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