tree 7577f0ec834b62fd9651f5638be0e8802c664b48
parent dbfa38488dfad533a882d5f4d517bfa4d1a2f3e5
author Hans Verkuil <hverkuil-cisco@xs4all.nl> 1665585148 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1667486958 +0900

media: vivid: s_fbuf: add more sanity checks

[ Upstream commit f8bcaf714abfc94818dff8c0db84d750433984f4 ]

VIDIOC_S_FBUF is by definition a scary ioctl, which is why only root
can use it. But at least check if the framebuffer parameters match that
of one of the framebuffer created by vivid, and reject anything else.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Fixes: ef834f7836ec ([media] vivid: add the video capture and output parts)
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>