diff options
| author | Johan Hovold <johan@kernel.org> | 2017-03-16 11:37:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-30 09:35:15 +0200 |
| commit | e916f1d6188ef765303b4f74387d7e92d49a5be6 (patch) | |
| tree | bf310825954240214ff5ebd958eb7368eff2f652 /drivers | |
| parent | 0812c6855c89d905e34e88166570cae4a401b23a (diff) | |
Input: yealink - validate number of endpoints before using them
commit 5cc4a1a9f5c179795c8a1f2b0f4361829d6a070e upstream.
Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.
Fixes: aca951a22a1d ("[PATCH] input-driver-yealink-P1K-usb-phone")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/misc/yealink.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/input/misc/yealink.c b/drivers/input/misc/yealink.c index 79c964c075f1..6e7ff9561d92 100644 --- a/drivers/input/misc/yealink.c +++ b/drivers/input/misc/yealink.c @@ -875,6 +875,10 @@ static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id) int ret, pipe, i; interface = intf->cur_altsetting; + + if (interface->desc.bNumEndpoints < 1) + return -ENODEV; + endpoint = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(endpoint)) return -ENODEV; |