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Date: Mon, 21 Jan 2019 14:43:08 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Hans Verkuil <hverkuil-cisco@...all.nl>, syzbot+57c3d83d71187054d56f@...kaller.appspotmail.com, Mauro Carvalho Chehab <mchehab+samsung@...nel.org> Subject: [PATCH 4.20 074/111] media: vivid: set min width/height to a value > 0 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans Verkuil <hverkuil-cisco@...all.nl> 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@...all.nl> Reported-by: syzbot+57c3d83d71187054d56f@...kaller.appspotmail.com Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- 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)
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