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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_fwd_netdev.c | |
| parent | netfilter: nf_tables: Introduce NFT_MSG_GETSETELEM_RESET (diff) | |
| download | wireguard-linux-a412dbf40ff37515acca4bba666f5386aa37246e.tar.xz wireguard-linux-a412dbf40ff37515acca4bba666f5386aa37246e.zip | |
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_fwd_netdev.c')
| -rw-r--r-- | net/netfilter/nft_fwd_netdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c index 7b9d4d1bd17c..a5268e6dd32f 100644 --- a/net/netfilter/nft_fwd_netdev.c +++ b/net/netfilter/nft_fwd_netdev.c @@ -40,7 +40,7 @@ static void nft_fwd_netdev_eval(const struct nft_expr *expr, static const struct nla_policy nft_fwd_netdev_policy[NFTA_FWD_MAX + 1] = { [NFTA_FWD_SREG_DEV] = { .type = NLA_U32 }, [NFTA_FWD_SREG_ADDR] = { .type = NLA_U32 }, - [NFTA_FWD_NFPROTO] = { .type = NLA_U32 }, + [NFTA_FWD_NFPROTO] = NLA_POLICY_MAX(NLA_BE32, 255), }; static int nft_fwd_netdev_init(const struct nft_ctx *ctx, |