From: Pavel Skripkin <paskripkin@gmail.com> stable inclusion from linux-4.19.199 commit a0a817b2d308fac090a05cbbe80988e073ac5193 -------------------------------- commit 0336f8ffece62f882ab3012820965a786a983f70 upstream. priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function. Fixes: 1e0a8b13d355 ("tlan: cancel work at remove path") Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/net/ethernet/ti/tlan.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c index 01f99e5df1456..9f2129623d189 100644 --- a/drivers/net/ethernet/ti/tlan.c +++ b/drivers/net/ethernet/ti/tlan.c @@ -312,9 +312,8 @@ static void tlan_remove_one(struct pci_dev *pdev) pci_release_regions(pdev); #endif - free_netdev(dev); - cancel_work_sync(&priv->tlan_tqueue); + free_netdev(dev); } static void tlan_start(struct net_device *dev) -- 2.25.1