media: v4l: ioctl: Validate num_planes before using it
Sakari Ailus authored
The for loop to reset the memory of the plane reserved fields runs over
num_planes provided by the user without validating it. Ensure num_planes
is no more than VIDEO_MAX_PLANES before the loop.

Fixes: 4e1e0eb0

 ("media: v4l2-ioctl: Zero v4l2_plane_pix_format reserved fields")
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
9048b2e1
Linux kernel
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