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[ATM] CLIP: Do not refer freed skbuff in clip_mkip().

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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>
This commit is contained in:
YOSHIFUJI Hideaki 2006-09-18 06:37:58 -07:00 committed by David S. Miller
parent d7811e623d
commit fe26109a9d
1 changed files with 2 additions and 0 deletions
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2
net/atm/clip.c
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@ -500,9 +500,11 @@ static int clip_mkip(struct atm_vcc *vcc, int timeout)
} else { } else {
unsigned int len = skb->len; unsigned int len = skb->len;
skb_get(skb);
clip_push(vcc, skb); clip_push(vcc, skb);
PRIV(skb->dev)->stats.rx_packets--; PRIV(skb->dev)->stats.rx_packets--;
PRIV(skb->dev)->stats.rx_bytes -= len; PRIV(skb->dev)->stats.rx_bytes -= len;
kfree_skb(skb);
} }
return 0; return 0;
} }