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rapidio/rionet: do not free skb before reading its length

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[ Upstream commit cfc435198f53a6fa1f656d98466b24967ff457d0 ]

skb is freed via dev_kfree_skb_any, however, skb->len is read then. This
may result in a use-after-free bug.

Fixes: e6161d64263 ("rapidio/rionet: rework driver initialization and removal")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pan Bian 2018-11-28 14:53:19 +08:00 committed by Greg Kroah-Hartman
parent 494fedded2
commit 9ab8f8cb26
1 changed files with 1 additions and 1 deletions
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2
drivers/net/rionet.c
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@ -215,9 +215,9 @@ static int rionet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
* it just report sending a packet to the target
* (without actual packet transfer).
*/
dev_kfree_skb_any(skb);
ndev->stats.tx_packets++;
ndev->stats.tx_bytes += skb->len;
dev_kfree_skb_any(skb);
}
}