[PATCH 5.15 381/917] media: dvb-usb: fix ununit-value in az6027_rc_query

Greg Kroah-Hartman
2021-11-16T00:56:16Z

From: Pavel Skripkin <paskripkin@gmail.com>

[ Upstream commit afae4ef7d5ad913cab1316137854a36bea6268a5 ]

Syzbot reported ununit-value bug in az6027_rc_query(). The problem was
in missing state pointer initialization. Since this function does nothing
we can simply initialize state to REMOTE_NO_KEY_PRESSED.

Reported-and-tested-by: syzbot+2cd8c5db4a85f0a04142@syzkaller.appspotmail.com

Fixes: 76f9a820c867 ("V4L/DVB: AZ6027: Initial import of the driver")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.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/usb/dvb-usb/az6027.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/media/usb/dvb-usb/az6027.c b/drivers/media/usb/dvb-usb/az6027.c
index 1c39b61cde29b..86788771175b7 100644
--- a/drivers/media/usb/dvb-usb/az6027.c
+++ b/drivers/media/usb/dvb-usb/az6027.c
@@ -391,6 +391,7 @@ static struct rc_map_table rc_map_az6027_table[] = {
/* remote control stuff (does not work with my box) */
static int az6027_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
+ *state = REMOTE_NO_KEY_PRESSED;
return 0;
}

--
2.33.0