| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.13 117/156] net/sched: act_ct: fix err check for nf_conntrack_confirm | Date | Thu, 22 Jul 2021 18:31:32 +0200 |
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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 @@ -1026,7 +1026,8 @@ 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)
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