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authorPavel Skripkin <paskripkin@gmail.com>2021-06-18 16:49:02 +0300
committerDavid S. Miller <davem@davemloft.net>2021-06-18 13:01:17 -0700
commit9cca0c2d70149160407bda9a9446ce0c29b6e6c6 (patch)
tree2665950cb2d0dc90397cf0c63063a80ef4d2777e /include
parent0d1dc9e1f4c03c2819f0557226c5322e405be3cb (diff)
net: ethernet: fix potential use-after-free in ec_bhf_remove
static void ec_bhf_remove(struct pci_dev *dev) { ... struct ec_bhf_priv *priv = netdev_priv(net_dev); unregister_netdev(net_dev); free_netdev(net_dev); pci_iounmap(dev, priv->dma_io); pci_iounmap(dev, priv->io); ... } priv is netdev private data, but it is used after free_netdev(). It can cause use-after-free when accessing priv pointer. So, fix it by moving free_netdev() after pci_iounmap() calls. Fixes: 6af55ff52b02 ("Driver for Beckhoff CX5020 EtherCAT master module.") Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
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