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media-device: fix infoleak in ioctl media_enum_entities()

This fixes CVE-2014-1739.

Signed-off-by: Salva Peiró <speiro@ai2.upv.es>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Change-Id: Ie7914a3f97650dd933d7ff4c836ff7fc850bae4a
(cherry picked from commit e6a623460e5fc960ac3ee9f946d3106233fd28d8)
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Salva Peiró authored and andi34 committed Apr 30, 2014
1 parent 797b512 commit ea18900902c4c52dc3fbc002554d7548c7f19914
Showing with 1 addition and 0 deletions.
  1. +1 −0 drivers/media/media-device.c
@@ -89,6 +89,7 @@ static long media_device_enum_entities(struct media_device *mdev,
struct media_entity *ent;
struct media_entity_desc u_ent;
memset(&u_ent, 0, sizeof(u_ent));
if (copy_from_user(&u_ent.id, &uent->id, sizeof(u_ent.id)))
return -EFAULT;

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