From: Pablo Neira Ayuso pablo@netfilter.org
[ Upstream commit 81ec61074bcf68acfcb2820cda3ff9d9984419c7 ]
If the rule only specifies the matching side, return EOPNOTSUPP. Otherwise, the front-end relies on the drivers to reject this rule.
Fixes: c9626a2cbdb2 ("netfilter: nf_tables: add hardware offload support") Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nf_tables_offload.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c index 6f7eab502e65..e743f811245f 100644 --- a/net/netfilter/nf_tables_offload.c +++ b/net/netfilter/nf_tables_offload.c @@ -44,6 +44,9 @@ struct nft_flow_rule *nft_flow_rule_create(struct net *net, expr = nft_expr_next(expr); }
+ if (num_actions == 0) + return ERR_PTR(-EOPNOTSUPP); + flow = nft_flow_rule_alloc(num_actions); if (!flow) return ERR_PTR(-ENOMEM);