From: wenxu wenxu@ucloud.cn
commit 8955b90c3cdad199137809aac8ccbbb585355913 upstream.
The confirm operation should be checked. If there are any failed, the packet should be dropped like in ovs and netfilter.
Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct") Signed-off-by: wenxu wenxu@ucloud.cn Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/sched/act_ct.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/sched/act_ct.c +++ b/net/sched/act_ct.c @@ -1023,7 +1023,8 @@ do_nat: /* This will take care of sending queued events * even if the connection is already confirmed. */ - nf_conntrack_confirm(skb); + if (nf_conntrack_confirm(skb) != NF_ACCEPT) + goto drop; }
if (!skip_add)