Subject: [PATCH] appletalk: fix atalk_getname() leak

From: Eric Dumazet <[email-masked]>
Date: Thu, 06 Aug 2009 14:27:43 +0200

atalk_getname() can leak 8 bytes of kernel memory to user

Signed-off-by: Eric Dumazet <[email-masked]>
---
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 590b839..9ef6ff2 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1237,6 +1237,7 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr,
 			return -ENOBUFS;
 
 	*uaddr_len = sizeof(struct sockaddr_at);
+	memset(&sat.sat_zero, 0, sizeof(sat.sat_zero));
 
 	if (peer) {
 		if (sk->sk_state != TCP_ESTABLISHED)