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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jon Maloy <jon.maloy@ericsson.com>,
	Richard Alpe <richard.alpe@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>,
	"David S. Miller" <davem@davemloft.net>,
	netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] tipc: info leak in __tipc_nl_add_udp_addr()
Date: Thu, 13 Oct 2016 08:06:06 +0000	[thread overview]
Message-ID: <20161013080606.GA3389@mwanda> (raw)

We should clear out the padding and unused struct members so that we
don't expose stack information to userspace.

Fixes: fdb3accc2c15 ('tipc: add the ability to get UDP options via netlink')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
This goes into the net tree.

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index d80cd3f..78cab9c 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -407,6 +407,7 @@ static int __tipc_nl_add_udp_addr(struct sk_buff *skb,
 	if (ntohs(addr->proto) = ETH_P_IP) {
 		struct sockaddr_in ip4;
 
+		memset(&ip4, 0, sizeof(ip4));
 		ip4.sin_family = AF_INET;
 		ip4.sin_port = addr->port;
 		ip4.sin_addr.s_addr = addr->ipv4.s_addr;
@@ -417,6 +418,7 @@ static int __tipc_nl_add_udp_addr(struct sk_buff *skb,
 	} else if (ntohs(addr->proto) = ETH_P_IPV6) {
 		struct sockaddr_in6 ip6;
 
+		memset(&ip6, 0, sizeof(ip6));
 		ip6.sin6_family = AF_INET6;
 		ip6.sin6_port  = addr->port;
 		memcpy(&ip6.sin6_addr, &addr->ipv6, sizeof(struct in6_addr));

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jon Maloy <jon.maloy@ericsson.com>,
	Richard Alpe <richard.alpe@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>,
	"David S. Miller" <davem@davemloft.net>,
	netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] tipc: info leak in __tipc_nl_add_udp_addr()
Date: Thu, 13 Oct 2016 11:06:06 +0300	[thread overview]
Message-ID: <20161013080606.GA3389@mwanda> (raw)

We should clear out the padding and unused struct members so that we
don't expose stack information to userspace.

Fixes: fdb3accc2c15 ('tipc: add the ability to get UDP options via netlink')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
This goes into the net tree.

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index d80cd3f..78cab9c 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -407,6 +407,7 @@ static int __tipc_nl_add_udp_addr(struct sk_buff *skb,
 	if (ntohs(addr->proto) == ETH_P_IP) {
 		struct sockaddr_in ip4;
 
+		memset(&ip4, 0, sizeof(ip4));
 		ip4.sin_family = AF_INET;
 		ip4.sin_port = addr->port;
 		ip4.sin_addr.s_addr = addr->ipv4.s_addr;
@@ -417,6 +418,7 @@ static int __tipc_nl_add_udp_addr(struct sk_buff *skb,
 	} else if (ntohs(addr->proto) == ETH_P_IPV6) {
 		struct sockaddr_in6 ip6;
 
+		memset(&ip6, 0, sizeof(ip6));
 		ip6.sin6_family = AF_INET6;
 		ip6.sin6_port  = addr->port;
 		memcpy(&ip6.sin6_addr, &addr->ipv6, sizeof(struct in6_addr));

             reply	other threads:[~2016-10-13  8:06 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-13  8:06 Dan Carpenter [this message]
2016-10-13  8:06 ` [patch] tipc: info leak in __tipc_nl_add_udp_addr() Dan Carpenter
2016-10-13 16:10 ` David Miller
2016-10-13 16:10   ` David Miller
2016-10-13 16:10   ` David Miller

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