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Input: powermate - fix oops with malicious USB descriptors
[pandora-kernel.git]
/
drivers
/
input
/
misc
/
powermate.c
diff --git
a/drivers/input/misc/powermate.c
b/drivers/input/misc/powermate.c
index
f459471
..
be34cd6
100644
(file)
--- a/
drivers/input/misc/powermate.c
+++ b/
drivers/input/misc/powermate.c
@@
-304,6
+304,9
@@
static int powermate_probe(struct usb_interface *intf, const struct usb_device_i
int error = -ENOMEM;
interface = intf->cur_altsetting;
+ if (interface->desc.bNumEndpoints < 1)
+ return -EINVAL;
+
endpoint = &interface->endpoint[0].desc;
if (!usb_endpoint_is_int_in(endpoint))
return -EIO;