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OpenCloudOS-Kernel
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drivers/net/usb: Remove all strcpy() uses 

strcpy() performs no bounds checking on the destination buffer. This
could result in linear overflows beyond the end of the buffer, leading
to all kinds of misbehaviors. The safe replacement is strscpy().

Signed-off-by: Len Baker <len.baker@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Len Baker 2021-08-01 19:12:26 +02:00 committed by David S. Miller
parent 9c638eaf42
commit 493c3ca6bd
2 changed files with 5 additions and 5 deletions
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2
drivers/net/usb/ipheth.c
View File

@ -443,7 +443,7 @@ static int ipheth_probe(struct usb_interface *intf,
netdev->netdev_ops = &ipheth_netdev_ops;
netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
strcpy(netdev->name, "eth%d");
strscpy(netdev->name, "eth%d", sizeof(netdev->name));
dev = netdev_priv(netdev);
dev->udev = udev;

8
drivers/net/usb/usbnet.c
View File

@ -1725,7 +1725,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
dev->interrupt_count = 0;
dev->net = net;
strcpy (net->name, "usb%d");
strscpy(net->name, "usb%d", sizeof(net->name));
memcpy (net->dev_addr, node_id, sizeof node_id);
/* rx and tx sides can use different message sizes;
@ -1752,13 +1752,13 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
(net->dev_addr [0] & 0x02) == 0))
strcpy (net->name, "eth%d");
strscpy(net->name, "eth%d", sizeof(net->name));
/* WLAN devices should always be named "wlan%d" */
if ((dev->driver_info->flags & FLAG_WLAN) != 0)
strcpy(net->name, "wlan%d");
strscpy(net->name, "wlan%d", sizeof(net->name));
/* WWAN devices should always be named "wwan%d" */
if ((dev->driver_info->flags & FLAG_WWAN) != 0)
strcpy(net->name, "wwan%d");
strscpy(net->name, "wwan%d", sizeof(net->name));
/* devices that cannot do ARP */
if ((dev->driver_info->flags & FLAG_NOARP) != 0)