From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 6 Aug 2009 03:31:07 +0000 (+0000)
Subject: netrom: Fix nr_getname() leak
X-Git-Tag: v2.6.30.6~5
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0535beef12f0d415e334516b981b2994b76b78cf;p=karo-tx-linux.git

netrom: Fix nr_getname() leak

commit f6b97b29513950bfbf621a83d85b6f86b39ec8db upstream.

nr_getname() can leak kernel memory to user.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 3be0e016ab7d..0c3e7551dbb7 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -848,6 +848,7 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
 		sax->fsa_ax25.sax25_family = AF_NETROM;
 		sax->fsa_ax25.sax25_ndigis = 1;
 		sax->fsa_ax25.sax25_call   = nr->user_addr;
+		memset(sax->fsa_digipeater, 0, sizeof(sax->fsa_digipeater));
 		sax->fsa_digipeater[0]     = nr->dest_addr;
 		*uaddr_len = sizeof(struct full_sockaddr_ax25);
 	} else {