[3.16.y-ckt stable] Patch "net/ping: handle protocol mismatching scenario" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Fri Dec 5 17:09:24 UTC 2014
This is a note to let you know that I have just added a patch titled
net/ping: handle protocol mismatching scenario
to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue
This patch is scheduled to be released in version 3.16.7-ckt3.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From ea56ab19520e241612bd1f9e4d9e900823ffb645 Mon Sep 17 00:00:00 2001
From: Jane Zhou <a17711 at motorola.com>
Date: Mon, 24 Nov 2014 11:44:08 -0800
Subject: net/ping: handle protocol mismatching scenario
commit 91a0b603469069cdcce4d572b7525ffc9fd352a6 upstream.
ping_lookup() may return a wrong sock if sk_buff's and sock's protocols
dont' match. For example, sk_buff's protocol is ETH_P_IPV6, but sock's
sk_family is AF_INET, in that case, if sk->sk_bound_dev_if is zero, a wrong
sock will be returned.
the fix is to "continue" the searching, if no matching, return NULL.
Cc: "David S. Miller" <davem at davemloft.net>
Cc: Alexey Kuznetsov <kuznet at ms2.inr.ac.ru>
Cc: James Morris <jmorris at namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji at linux-ipv6.org>
Cc: Patrick McHardy <kaber at trash.net>
Cc: netdev at vger.kernel.org
Signed-off-by: Jane Zhou <a17711 at motorola.com>
Signed-off-by: Yiwei Zhao <gbjc64 at motorola.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
net/ipv4/ping.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 044a0ddf6a79..620e8ffa62e8 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -217,6 +217,8 @@ static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident)
&ipv6_hdr(skb)->daddr))
continue;
#endif
+ } else {
+ continue;
}
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif)
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