From: Johan Hovold <[email protected]>
commit 4ce362711d78a4999011add3115b8f4b0bc25e8c 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 cmd and wait_init_done
callbacks which are called during probe.
Fixes: 1ba47da52712 ("uwb: add the i1480 DFU driver")
Cc: Inaky Perez-Gonzalez <[email protected]>
Cc: David Vrabel <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Signed-off-by: Willy Tarreau <[email protected]>
---
drivers/uwb/i1480/dfu/usb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c
index 2bfc846..6345e85 100644
--- a/drivers/uwb/i1480/dfu/usb.c
+++ b/drivers/uwb/i1480/dfu/usb.c
@@ -362,6 +362,9 @@ int i1480_usb_probe(struct usb_interface *iface, const
struct usb_device_id *id)
result);
}
+ if (iface->cur_altsetting->desc.bNumEndpoints < 1)
+ return -ENODEV;
+
result = -ENOMEM;
i1480_usb = kzalloc(sizeof(*i1480_usb), GFP_KERNEL);
if (i1480_usb == NULL) {
--
2.8.0.rc2.1.gbe9624a
