Patch "ipv4: Fix traffic triggered IPsec connections." has been added to the 4.13-stable tree

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

ipv4: Fix traffic triggered IPsec connections.

to the 4.13-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:
ipv4-fix-traffic-triggered-ipsec-connections.patch
and it can be found in the queue-4.13 subdirectory.

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

From: Steffen Klassert <[email protected]>
Date: Mon, 9 Oct 2017 08:43:55 +0200
Subject: ipv4: Fix traffic triggered IPsec connections.

From: Steffen Klassert <[email protected]>

[ Upstream commit 6c0e7284d89995877740d8a26c3e99a937312a3c ]

A recent patch removed the dst_free() on the allocated dst_entry in ipv4_blackhole_route(). The dst_free() marked the dst_entry as dead and added it to the gc list. I.e. it was setup for a one time usage. As a result we may now have a blackhole route cached at a socket on some IPsec scenarios. This makes the connection unusable.

Fix this by marking the dst_entry directly at allocation time as 'dead', so it is used only once.

---
 net/ipv4/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -2507,7 +2507,7 @@ struct dst_entry *ipv4_blackhole_route(s
 	struct rtable *ort = (struct rtable *) dst_orig;
 	struct rtable *rt;
 
-	rt = dst_alloc(&ipv4_dst_blackhole_ops, NULL, 1, DST_OBSOLETE_NONE, 0);
+	rt = dst_alloc(&ipv4_dst_blackhole_ops, NULL, 1, DST_OBSOLETE_DEAD, 0);
 	if (rt) {
 		struct dst_entry *new = &rt->dst;
 

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

queue-4.13/ipv6-fix-traffic-triggered-ipsec-connections.patch queue-4.13/ipv4-fix-traffic-triggered-ipsec-connections.patch