From 3ee6d040719ae09110e5cdf24d5386abe5d1b776 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Wed, 24 Jan 2018 08:37:04 -0500
Subject: [PATCH] media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
Git-commit: 3ee6d040719ae09110e5cdf24d5386abe5d1b776
Patch-mainline: v4.16-rc1
References: CVE-2017-13166,bsc#1072865
The result of the VIDIOC_PREPARE_BUF ioctl was never copied back
to userspace since it was missing in the switch.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: <stable@vger.kernel.org> # for v4.15 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -1048,6 +1048,7 @@ static long do_video_ioctl(struct file *
err = put_v4l2_create32(&karg.v2crt, up);
break;
+ case VIDIOC_PREPARE_BUF:
case VIDIOC_QUERYBUF:
case VIDIOC_QBUF:
case VIDIOC_DQBUF: