diff options
| 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_byteorder.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_byteorder.c')
| -rw-r--r-- | net/netfilter/nft_byteorder.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/netfilter/nft_byteorder.c b/net/netfilter/nft_byteorder.c index b66647a5a171..9a85e797ed58 100644 --- a/net/netfilter/nft_byteorder.c +++ b/net/netfilter/nft_byteorder.c @@ -88,9 +88,9 @@ void nft_byteorder_eval(const struct nft_expr *expr, static const struct nla_policy nft_byteorder_policy[NFTA_BYTEORDER_MAX + 1] = { [NFTA_BYTEORDER_SREG] = { .type = NLA_U32 }, [NFTA_BYTEORDER_DREG] = { .type = NLA_U32 }, - [NFTA_BYTEORDER_OP] = { .type = NLA_U32 }, - [NFTA_BYTEORDER_LEN] = { .type = NLA_U32 }, - [NFTA_BYTEORDER_SIZE] = { .type = NLA_U32 }, + [NFTA_BYTEORDER_OP] = NLA_POLICY_MAX(NLA_BE32, 255), + [NFTA_BYTEORDER_LEN] = NLA_POLICY_MAX(NLA_BE32, 255), + [NFTA_BYTEORDER_SIZE] = NLA_POLICY_MAX(NLA_BE32, 255), }; static int nft_byteorder_init(const struct nft_ctx *ctx, |