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USB-serial fixes for v4.18-rc4

Browse source 
Here are three fixes for broken control-transfer error handling, which
 could lead to uninitialised slab data leaking to user space.
 
 Included is also a new device id for cp210x.
 
 All but the final two patches have been in linux-next with no reported
 issues.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.18-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

USB-serial fixes for v4.18-rc4

Here are three fixes for broken control-transfer error handling, which
could lead to uninitialised slab data leaking to user space.

Included is also a new device id for cp210x.

All but the final two patches have been in linux-next with no reported
issues.

Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Greg Kroah-Hartman 2018-07-06 16:23:19 +02:00
commit e3ebc3ad0c
4 changed files with 8 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/usb/serial/ch341.c
View file

@ -128,7 +128,7 @@ static int ch341_control_in(struct usb_device *dev,
r = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
value, index, buf, bufsize, DEFAULT_TIMEOUT);
if (r < bufsize) {
if (r < (int)bufsize) {
if (r >= 0) {
dev_err(&dev->dev,
"short control message received (%d < %u)\n",

1
drivers/usb/serial/cp210x.c
View file

@ -149,6 +149,7 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x8977) }, /* CEL MeshWorks DevKit Device */
{ USB_DEVICE(0x10C4, 0x8998) }, /* KCF Technologies PRN */
{ USB_DEVICE(0x10C4, 0x89A4) }, /* CESINEL FTBC Flexible Thyristor Bridge Controller */
{ USB_DEVICE(0x10C4, 0x89FB) }, /* Qivicon ZigBee USB Radio Stick */
{ USB_DEVICE(0x10C4, 0x8A2A) }, /* HubZ dual ZigBee and Z-Wave dongle */
{ USB_DEVICE(0x10C4, 0x8A5E) }, /* CEL EM3588 ZigBee USB Stick Long Range */
{ USB_DEVICE(0x10C4, 0x8B34) }, /* Qivicon ZigBee USB Radio Stick */

4
drivers/usb/serial/keyspan_pda.c
View file

@ -369,8 +369,10 @@ static int keyspan_pda_get_modem_info(struct usb_serial *serial,
3, /* get pins */
USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
0, 0, data, 1, 2000);
if (rc >= 0)
if (rc == 1)
*value = *data;
else if (rc >= 0)
rc = -EIO;
kfree(data);
return rc;

3
drivers/usb/serial/mos7840.c
View file

@ -468,6 +468,9 @@ static void mos7840_control_callback(struct urb *urb)
}
dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length);
if (urb->actual_length < 1)
goto out;
dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__,
mos7840_port->MsrLsr, mos7840_port->port_num);
data = urb->transfer_buffer;