[media] 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>

diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index d5a7a13..703560f 100644 (file)
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -93,6 +93,7 @@ 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;