diff options
| author | Johan Hovold <johan@kernel.org> | 2017-03-13 13:47:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-30 09:35:17 +0200 |
| commit | 2c251e568e1a5dfbdab7156eaa848cd45b3cb127 (patch) | |
| tree | 6065344cb7e3d33ab921070f581ad1d60ae9b027 /drivers | |
| parent | 815321da2e267c5c44a2900b39ac92632a9d6e80 (diff) | |
uwb: hwa-rc: fix NULL-deref at probe
commit daf229b15907fbfdb6ee183aac8ca428cb57e361 upstream.
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 start callback which is called
during probe.
Fixes: de520b8bd552 ("uwb: add HWA radio controller driver")
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/uwb/hwa-rc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 0257f35cfb9d..e75bbe5a10cd 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -825,6 +825,9 @@ static int hwarc_probe(struct usb_interface *iface, struct hwarc *hwarc; struct device *dev = &iface->dev; + if (iface->cur_altsetting->desc.bNumEndpoints < 1) + return -ENODEV; + result = -ENOMEM; uwb_rc = uwb_rc_alloc(); if (uwb_rc == NULL) { |