[lucid/fsl-imx51, maverick/ti-omap4 CVE 1/1] Bluetooth: sco: fix information leak to userspace

[Andy Whitcroft]

From: Vasiliy Kulikov <segoon at openwall.com>

struct sco_conninfo has one padding byte in the end.  Local variable
cinfo of type sco_conninfo is copied to userspace with this uninizialized
one byte, leading to old stack contents leak.

Signed-off-by: Vasiliy Kulikov <segoon at openwall.com>
Signed-off-by: Gustavo F. Padovan <padovan at profusion.mobi>

(cherry picked from commit c4c896e1471aec3b004a693c689f60be3b17ac86)
CVE-2011-1078
BugLink: http://bugs.launchpad.net/bugs/816542
Signed-off-by: Andy Whitcroft <apw at canonical.com>
---
 net/bluetooth/sco.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 6e9c6e5..28b3d56 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -705,6 +705,7 @@ static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user
 			break;
 		}
 
+		memset(&cinfo, 0, sizeof(cinfo));
 		cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
 		memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
 
-- 
1.7.4.1