mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
Input: cm109 - validate number of endpoints before using them
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.
Fixes: c04148f915
("Input: add driver for USB VoIP phones with CM109...")
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable@vger.kernel.org # 2.6.28
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
parent
59cf8bed44
commit
ac2ee9ba95
1 changed files with 4 additions and 0 deletions
|
@ -700,6 +700,10 @@ static int cm109_usb_probe(struct usb_interface *intf,
|
|||
int error = -ENOMEM;
|
||||
|
||||
interface = intf->cur_altsetting;
|
||||
|
||||
if (interface->desc.bNumEndpoints < 1)
|
||||
return -ENODEV;
|
||||
|
||||
endpoint = &interface->endpoint[0].desc;
|
||||
|
||||
if (!usb_endpoint_is_int_in(endpoint))
|
||||
|
|
Loading…
Reference in a new issue