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ipvlan: fix use after free of skb 

ipvlan_handle_frame is a rx_handler, and when it returns a value other
than RX_HANDLER_CONSUMED (here, NET_RX_DROP aka RX_HANDLER_ANOTHER),
__netif_receive_skb_core expects that the skb still exists and will
process it further, but we just freed it.

Fixes: 2ad7bf3638 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sabrina Dubroca 2015-11-16 22:44:53 +01:00 committed by David S. Miller
parent cf554ada0b
commit a534dc5298
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ipvlan/ipvlan_core.c
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@ -653,5 +653,5 @@ rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb)
WARN_ONCE(true, "ipvlan_handle_frame() called for mode = [%hx]\n",
port->mode);
kfree_skb(skb);
return NET_RX_DROP;
return RX_HANDLER_CONSUMED;
}