Fix the direct assignment from u32 data input into the family
attribute with a size of u8.
Signed-off-by: Laura Garcia Liebana <nevola@xxxxxxxxx>
---
net/netfilter/nft_nat.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/netfilter/nft_nat.c b/net/netfilter/nft_nat.c
index ee2d717..74f8293 100644
--- a/net/netfilter/nft_nat.c
+++ b/net/netfilter/nft_nat.c
@@ -148,6 +148,8 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
family = ntohl(nla_get_be32(tb[NFTA_NAT_FAMILY]));
if (family != ctx->afi->family)
return -EOPNOTSUPP;
+ if (family > U8_MAX)
+ return -EINVAL;
switch (family) {
case NFPROTO_IPV4:
--
2.8.1
--
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