Patch "net: igmp: fix source address check for IGMPv3 reports" has been added to the 3.18-stable tree

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

net: igmp: fix source address check for IGMPv3 reports

to the 3.18-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:
net-igmp-fix-source-address-check-for-igmpv3-reports.patch
and it can be found in the queue-3.18 subdirectory.

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

From: Felix Fietkau <[email protected]>
Date: Fri, 19 Jan 2018 11:50:46 +0100
Subject: net: igmp: fix source address check for IGMPv3 reports

From: Felix Fietkau <[email protected]>

[ Upstream commit ad23b750933ea7bf962678972a286c78a8fa36aa ]

Commit "net: igmp: Use correct source address on IGMPv3 reports" introduced a check to validate the source address of locally generated IGMPv3 packets.
Instead of checking the local interface address directly, it uses inet_ifa_match(fl4->saddr, ifa), which checks if the address is on the local subnet (or equal to the point-to-point address if used).

This breaks for point-to-point interfaces, so check against ifa->ifa_local directly.

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

@@ -329,7 +329,7 @@ static __be32 igmpv3_get_srcaddr(struct
 		return htonl(INADDR_ANY);
 
 	for_ifa(in_dev) {
-		if (inet_ifa_match(fl4->saddr, ifa))
+		if (fl4->saddr == ifa->ifa_local)
 			return fl4->saddr;
 	} endfor_ifa(in_dev);
 

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

queue-3.18/net-igmp-fix-source-address-check-for-igmpv3-reports.patch