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Patch "bridge: netfilter: Fix dropping packets that moving through bridge interface" has been added to the 4.9-stable tree

PATCH [email protected] 1 participant 1 message Jan 17, 2017

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This is a note to let you know that I've just added the patch titled

bridge: netfilter: Fix dropping packets that moving through bridge interface

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
bridge-netfilter-fix-dropping-packets-that-moving-through-bridge-interface.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 14221cc45caad2fcab3a8543234bb7eda9b540d5 Mon Sep 17 00:00:00 2001

From: Artur Molchanov <[email protected]>
Date: Fri, 30 Dec 2016 19:46:36 +0300
Subject: bridge: netfilter: Fix dropping packets that moving through bridge interface

From: Artur Molchanov <[email protected]>

commit 14221cc45caad2fcab3a8543234bb7eda9b540d5 upstream.

Problem:
br_nf_pre_routing_finish() calls itself instead of br_nf_pre_routing_finish_bridge(). Due to this bug reverse path filter drops packets that go through bridge interface.

User impact:
Local docker containers with bridge network can not communicate with each other.

Fixes c5136b15ea36 ("netfilter: bridge: add and use br_nf_hook_thresh")
---
 net/bridge/br_netfilter_hooks.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
net/bridge/br_netfilter_hooks.c +1 -1
@@ -399,7 +399,7 @@ bridged_dnat:
 				br_nf_hook_thresh(NF_BR_PRE_ROUTING,
 						  net, sk, skb, skb->dev,
 						  NULL,
-						  br_nf_pre_routing_finish);
+						  br_nf_pre_routing_finish_bridge);
 				return 0;
 			}
 			ether_addr_copy(eth_hdr(skb)->h_dest, dev->dev_addr);

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/bridge-netfilter-fix-dropping-packets-that-moving-through-bridge-interface.patch