From: Liping Zhang <[email protected]>
Otherwise, kernel panic will happen if the user does not specify
the related attributes.
Fixes: 0f3cd9b36977 ("netfilter: nf_tables: add range expression")
Signed-off-by: Liping Zhang <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
---
net/netfilter/nft_range.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/netfilter/nft_range.c b/net/netfilter/nft_range.c
index fbc88009ca2e..8f0aaaea1376 100644
--- a/net/netfilter/nft_range.c
+++ b/net/netfilter/nft_range.c
@@ -59,6 +59,12 @@ static int nft_range_init(const struct nft_ctx *ctx, const
struct nft_expr *expr
int err;
u32 op;
+ if (!tb[NFTA_RANGE_SREG] ||
+ !tb[NFTA_RANGE_OP] ||
+ !tb[NFTA_RANGE_FROM_DATA] ||
+ !tb[NFTA_RANGE_TO_DATA])
+ return -EINVAL;
+
err = nft_data_init(NULL, &priv->data_from, sizeof(priv->data_from),
&desc_from, tb[NFTA_RANGE_FROM_DATA]);
if (err < 0)
--
2.1.4
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