openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

USB: cdc-acm: check for valid interfaces 

We need to check that we have both a valid data and control inteface for both
types of headers (union and not union.)

References: https://bugzilla.kernel.org/show_bug.cgi?id=83551
Reported-by: Simon Schubert <2+kernel@0x2c.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2014-11-07 08:48:15 -08:00
parent d908f8478a
commit 403dff4e2c
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/usb/class/cdc-acm.c
View File

@ -1195,10 +1195,11 @@ static int acm_probe(struct usb_interface *intf,
} else {
control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
if (!control_interface || !data_interface) {
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
}
if (!control_interface || !data_interface) {
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
if (data_interface_num != call_interface_num)