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Message-Id: <1286786794-10410-1-git-send-email-jslaby@suse.cz>
Date:	Mon, 11 Oct 2010 10:46:34 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, linux-atm-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, jirislaby@...il.com,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH 1/1] ATM: mpc, fix use after free

Stanse found that mpc_push frees skb and then it dereferences it. It
is a typo, new_skb should be dereferenced there.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Eric Dumazet <eric.dumazet@...il.com>
---
 net/atm/mpc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index 622b471..74bcc66 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -778,7 +778,7 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
 	eg->packets_rcvd++;
 	mpc->eg_ops->put(eg);
 
-	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
+	memset(ATM_SKB(new_skb), 0, sizeof(struct atm_skb_data));
 	netif_rx(new_skb);
 }
 
-- 
1.7.3.1


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