Make sure to check for the required out endpoint to avoid dereferencing
a NULL-pointer in mce_request_packet should a malicious device lack such
an endpoint. Note that this path it hit during probe.
Fixes: 66e89522aff7 ("V4L/DVB: IR: add mceusb IR receiver driver")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 2.6.36
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
Found through inspection, compile tested only.
Johan
drivers/media/rc/mceusb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index 238d8eaf7d94..93b16fe3ab38 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -1288,8 +1288,8 @@ static int mceusb_dev_probe(struct usb_interface *intf,
}
}
}
- if (ep_in == NULL) {
- dev_dbg(&intf->dev, "inbound and/or endpoint not found");
+ if (!ep_in || !ep_out) {
+ dev_dbg(&intf->dev, "required endpoints not found\n");
return -ENODEV;
}
--
2.12.0