From fe26109a9dfd9327fdbe630fc819e1b7450986b2 Mon Sep 17 00:00:00 2001
From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Mon, 18 Sep 2006 06:37:58 -0700
Subject: [ATM] CLIP: Do not refer freed skbuff in clip_mkip().

In clip_mkip(), skb->dev is dereferenced after clip_push(),
which frees up skb.

Advisory: AD_LAB-06009 (<adlab@venustech.com.cn>).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/atm/clip.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'net')

diff --git a/net/atm/clip.c b/net/atm/clip.c
index 7ce7bfe3fbad..7af2c411da82 100644
--- a/net/atm/clip.c
+++ b/net/atm/clip.c
@@ -500,9 +500,11 @@ static int clip_mkip(struct atm_vcc *vcc, int timeout)
 		} else {
 			unsigned int len = skb->len;
 
+			skb_get(skb);
 			clip_push(vcc, skb);
 			PRIV(skb->dev)->stats.rx_packets--;
 			PRIV(skb->dev)->stats.rx_bytes -= len;
+			kfree_skb(skb);
 		}
 	return 0;
 }
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