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| author | Florian Westphal <fw@strlen.de> | 2023-06-21 21:11:03 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-06-26 08:05:57 +0200 |
| commit | a412dbf40ff37515acca4bba666f5386aa37246e (patch) | |
| tree | d29ebda49810ab08757b1d5c33f2ea6001d04df1 /net/netfilter/nft_range.c | |
| parent | 079cd633219d7298d087cd115c17682264244c18 (diff) | |
| download | linux-a412dbf40ff37515acca4bba666f5386aa37246e.tar.gz | |
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_range.c')
| -rw-r--r-- | net/netfilter/nft_range.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nft_range.c b/net/netfilter/nft_range.c index 0566d6aaf1e5af..51ae64cd268f43 100644 --- a/net/netfilter/nft_range.c +++ b/net/netfilter/nft_range.c @@ -42,7 +42,7 @@ void nft_range_eval(const struct nft_expr *expr, static const struct nla_policy nft_range_policy[NFTA_RANGE_MAX + 1] = { [NFTA_RANGE_SREG] = { .type = NLA_U32 }, - [NFTA_RANGE_OP] = { .type = NLA_U32 }, + [NFTA_RANGE_OP] = NLA_POLICY_MAX(NLA_BE32, 255), [NFTA_RANGE_FROM_DATA] = { .type = NLA_NESTED }, [NFTA_RANGE_TO_DATA] = { .type = NLA_NESTED }, }; |