From: Hans de Goede <hdegoede@redhat.com>
Date: Sat, 13 Jun 2009 21:56:22 +0000 (-0300)
Subject: V4L/DVB (12071): gspca: fix NULL pointer deref in query_ctrl
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b8bfb5fb348d939a96fc8f71996a2e5e48b4544b;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

V4L/DVB (12071): gspca: fix NULL pointer deref in query_ctrl

gspca: fix NULL pointer deref in query_ctrl

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index f7e0355ad644..1e89600986c8 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1042,13 +1042,11 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 		for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
 			if (gspca_dev->ctrl_dis & (1 << i))
 				continue;
-			if (ctrls->qctrl.id < id)
+			if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
 				continue;
-			if (ctrls != NULL) {
-				if (gspca_dev->sd_desc->ctrls[i].qctrl.id
+			if (ctrls && gspca_dev->sd_desc->ctrls[i].qctrl.id
 					    > ctrls->qctrl.id)
-					continue;
-			}
+				continue;
 			ctrls = &gspca_dev->sd_desc->ctrls[i];
 		}
 	} else {