4.20-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
commit 9729d6d282a6d7ce88e64c9119cecdf79edf4e88 upstream.
The capture DV timings capabilities allowed for a minimum width and
height of 0. So passing a timings struct with 0 values is allowed
and will later cause a division by zero.
Ensure that the width and height must be >= 16 to avoid this.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Reported-by: syzbot+57c3d83d71187054d56f@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/vivid/vivid-vid-common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/platform/vivid/vivid-vid-common.c
+++ b/drivers/media/platform/vivid/vivid-vid-common.c
@@ -21,7 +21,7 @@ const struct v4l2_dv_timings_cap vivid_d
.type = V4L2_DV_BT_656_1120,
/* keep this initialization for compatibility with GCC < 4.4.6 */
.reserved = { 0 },
- V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 14000000, 775000000,
+ V4L2_INIT_BT_TIMINGS(16, MAX_WIDTH, 16, MAX_HEIGHT, 14000000, 775000000,
V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF,
V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
