uwb: i1480-dfu: fix NULL-deref at probe
authorJohan Hovold <johan@kernel.org>
Mon, 13 Mar 2017 12:47:53 +0000 (13:47 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 14 Mar 2017 09:07:31 +0000 (17:07 +0800)
commit4ce362711d78a4999011add3115b8f4b0bc25e8c
tree3239393c08641bf1d405c88f8761bba4ca6e8287
parentdaf229b15907fbfdb6ee183aac8ca428cb57e361
uwb: i1480-dfu: fix NULL-deref at probe

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer should a malicious device lack endpoints.

Note that the dereference happens in the cmd and wait_init_done
callbacks which are called during probe.

Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver")
Cc: stable <stable@vger.kernel.org> # 2.6.28
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Cc: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/uwb/i1480/dfu/usb.c