[PATCH AUTOSEL 4.9 03/41] media: ati_remote: sanity check for both endpoints

[Sasha Levin]

From: Oliver Neukum <oneu...@suse.com>

[ Upstream commit a8be80053ea74bd9c3f9a3810e93b802236d6498 ]

If you do sanity checks, you should do them for both endpoints.
Hence introduce checking for endpoint type for the output
endpoint, too.

Reported-by: syzbot+998261c2ae5932458...@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneu...@suse.com>
Signed-off-by: Sean Young <s...@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/media/rc/ati_remote.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
index 9f5b59706741c..7f98db4bc0277 100644
--- a/drivers/media/rc/ati_remote.c
+++ b/drivers/media/rc/ati_remote.c
@@ -850,6 +850,10 @@ static int ati_remote_probe(struct usb_interface 
*interface,
                err("%s: endpoint_in message size==0? \n", __func__);
                return -ENODEV;
        }
+       if (!usb_endpoint_is_int_out(endpoint_out)) {
+               err("%s: Unexpected endpoint_out\n", __func__);
+               return -ENODEV;
+       }
 
        ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL);
        rc_dev = rc_allocate_device();
-- 
2.25.1