[PATCH 1/1] ATM: mpc, fix use after free

From: Jiri Slaby
Date: Mon Oct 11 2010 - 04:46:46 EST


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@xxxxxxx>
Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
---
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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