From: Dan Carpenter Date: Sat, 13 Apr 2013 09:32:15 +0000 (-0300) Subject: [media] media: info leak in __media_device_enum_links() X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c88e739b1fad662240e99ecbd0bdaac871717987;p=openwrt%2Fstaging%2Fblogic.git [media] media: info leak in __media_device_enum_links() These structs have holes and reserved struct members which aren't cleared. I've added a memset() so we don't leak stack information. Signed-off-by: Dan Carpenter Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 1957c0df08fd..d5a7a135f75d 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -142,6 +142,8 @@ static long __media_device_enum_links(struct media_device *mdev, for (p = 0; p < entity->num_pads; p++) { struct media_pad_desc pad; + + memset(&pad, 0, sizeof(pad)); media_device_kpad_to_upad(&entity->pads[p], &pad); if (copy_to_user(&links->pads[p], &pad, sizeof(pad))) return -EFAULT; @@ -159,6 +161,7 @@ static long __media_device_enum_links(struct media_device *mdev, if (entity->links[l].source->entity != entity) continue; + memset(&link, 0, sizeof(link)); media_device_kpad_to_upad(entity->links[l].source, &link.source); media_device_kpad_to_upad(entity->links[l].sink,