From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Carpenter Date: Sat, 13 Apr 2013 09:32:15 +0000 Subject: [patch] [media] media: info leak in __media_device_enum_links() Message-Id: <20130413093215.GB11215@elgon.mountain> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, kernel-janitors@vger.kernel.org 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 diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 99b80b6..450c0d1 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -139,6 +139,8 @@ 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; @@ -156,6 +158,7 @@ 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,