Re: [PATCH] net: igmp: fix source address check for IGMPv3 reports

[David Miller <davem@davemloft.net>]

From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 23 Jan 2018 10:48:59 +0100

> On 2018-01-22 22:17, David Miller wrote:
>> From: Felix Fietkau <nbd@nbd.name>
>> Date: Fri, 19 Jan 2018 11:50:46 +0100
>> 
>>> 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.
>>> 
>>> Cc: Kevin Cernekee <cernekee@chromium.org>
>>> Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports")
>>> Reported-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
>>> Signed-off-by: Felix Fietkau <nbd@nbd.name>
>> 
>> Applied, thanks.
> Thanks. Please queue it up for stable as well, since the commit fixed by
> this patch has already made it to stable kernels.

I did, thank you.