From: Oliver Neukum oneukum@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+998261c2ae5932458f6c@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum oneukum@suse.com Signed-off-by: Sean Young sean@mess.org Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@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 8e82610ffaad5..01c82da8e9aa2 100644 --- a/drivers/media/rc/ati_remote.c +++ b/drivers/media/rc/ati_remote.c @@ -845,6 +845,10 @@ 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(RC_DRIVER_SCANCODE);