From: "Edward Killips" <etkillips@hotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Netfilter Oops Solved
Date: Mon, 17 Dec 2001 01:07:52 -0500 [thread overview]
Message-ID: <F141o1ujjSkZSvx5bd600005006@hotmail.com> (raw)
I found the problem in the netfilter code. In the file ipt_TOS.c the
following code is wrong;
if(!nskb)
return NF_DROP;
*pskb = nskb; <---this should be down 1 line
kfree_skb(*pksb); <-- pointer is freed here
iph = (*pksb)->nh.iph; <-- freed pointer is used here.
The following patch fixes the problem.
--- ipt_TOS.c.orig Mon Dec 17 00:33:50 2001
+++ ipt_TOS.c Mon Dec 17 00:34:18 2001
@@ -27,8 +27,8 @@
struct sk_buff *nskb = skb_copy(*pskb, GFP_ATOMIC);
if (!nskb)
return NF_DROP;
- *pskb = nskb;
kfree_skb(*pskb);
+ *pskb = nskb;
iph = (*pskb)->nh.iph;
}
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next reply other threads:[~2001-12-17 6:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-17 6:07 Edward Killips [this message]
2001-12-17 12:54 ` Harald Welte
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