Patch "8021q: fix a potential memory leak" has been added to the 3.10-stable tree

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

    8021q: fix a potential memory leak

to the 3.10-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:
     8021q-fix-a-potential-memory-leak.patch
and it can be found in the queue-3.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From foo@baz Sat Jul 26 10:03:51 PDT 2014
From: Li RongQing <roy.qing.li@xxxxxxxxx>
Date: Wed, 18 Jun 2014 13:46:02 +0800
Subject: 8021q: fix a potential memory leak

From: Li RongQing <roy.qing.li@xxxxxxxxx>

[ Upstream commit 916c1689a09bc1ca81f2d7a34876f8d35aadd11b ]

skb_cow called in vlan_reorder_header does not free the skb when it failed,
and vlan_reorder_header returns NULL to reset original skb when it is called
in vlan_untag, lead to a memory leak.

Signed-off-by: Li RongQing <roy.qing.li@xxxxxxxxx>
Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/8021q/vlan_core.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -103,8 +103,11 @@ EXPORT_SYMBOL(vlan_dev_vlan_id);
 
 static struct sk_buff *vlan_reorder_header(struct sk_buff *skb)
 {
-	if (skb_cow(skb, skb_headroom(skb)) < 0)
+	if (skb_cow(skb, skb_headroom(skb)) < 0) {
+		kfree_skb(skb);
 		return NULL;
+	}
+
 	memmove(skb->data - ETH_HLEN, skb->data - VLAN_ETH_HLEN, 2 * ETH_ALEN);
 	skb->mac_header += VLAN_HLEN;
 	return skb;


Patches currently in stable-queue which might be from roy.qing.li@xxxxxxxxx are

queue-3.10/8021q-fix-a-potential-memory-leak.patch
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