From bbe5cbd01823805a7cbba06b043c19b559e324c4 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 6 Aug 2009 20:27:04 +0000
Subject: [PATCH] can: Fix raw_getname() leak

commit e84b90ae5eb3c112d1f208964df1d8156a538289 upstream.

raw_getname() can leak 10 bytes of kernel memory to user

(two bytes hole between can_family and can_ifindex,
8 bytes at the end of sockaddr_can structure)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 net/can/raw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/can/raw.c b/net/can/raw.c
index 6e0663faaf9f..08f31d4c480d 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -396,6 +396,7 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
 	if (peer)
 		return -EOPNOTSUPP;
 
+	memset(addr, 0, sizeof(*addr));
 	addr->can_family  = AF_CAN;
 	addr->can_ifindex = ro->ifindex;
 
-- 
2.39.2