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author | Florian Westphal <fw@strlen.de> | 2023-06-21 22:11:03 +0300 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-06-26 09:05:57 +0300 |
commit | a412dbf40ff37515acca4bba666f5386aa37246e (patch) | |
tree | d29ebda49810ab08757b1d5c33f2ea6001d04df1 /net/netfilter/nft_hash.c | |
parent | 079cd633219d7298d087cd115c17682264244c18 (diff) | |
download | linux-a412dbf40ff37515acca4bba666f5386aa37246e.tar.xz |
netfilter: nf_tables: limit allowed range via nla_policy
These NLA_U32 types get stored in u8 fields, reject invalid values
instead of silently casting to u8.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nft_hash.c')
-rw-r--r-- | net/netfilter/nft_hash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nft_hash.c b/net/netfilter/nft_hash.c index ee8d487b69c0..92d47e469204 100644 --- a/net/netfilter/nft_hash.c +++ b/net/netfilter/nft_hash.c @@ -59,7 +59,7 @@ static void nft_symhash_eval(const struct nft_expr *expr, static const struct nla_policy nft_hash_policy[NFTA_HASH_MAX + 1] = { [NFTA_HASH_SREG] = { .type = NLA_U32 }, [NFTA_HASH_DREG] = { .type = NLA_U32 }, - [NFTA_HASH_LEN] = { .type = NLA_U32 }, + [NFTA_HASH_LEN] = NLA_POLICY_MAX(NLA_BE32, 255), [NFTA_HASH_MODULUS] = { .type = NLA_U32 }, [NFTA_HASH_SEED] = { .type = NLA_U32 }, [NFTA_HASH_OFFSET] = { .type = NLA_U32 }, |