Patch "dcbnl: fix various netlink info leaks" has been added to the 3.0-stable tree

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This is a note to let you know that I've just added the patch titled

    dcbnl: fix various netlink info leaks

to the 3.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     dcbnl-fix-various-netlink-info-leaks.patch
and it can be found in the queue-3.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 3512fe006b6a98f2138f8b7aeb1285ff5dd06402 Mon Sep 17 00:00:00 2001
From: Mathias Krause <minipli@xxxxxxxxxxxxxx>
Date: Sat, 9 Mar 2013 05:52:21 +0000
Subject: dcbnl: fix various netlink info leaks


From: Mathias Krause <minipli@xxxxxxxxxxxxxx>

[ Upstream commit 29cd8ae0e1a39e239a3a7b67da1986add1199fc0 ]

The dcb netlink interface leaks stack memory in various places:
* perm_addr[] buffer is only filled at max with 12 of the 32 bytes but
  copied completely,
* no in-kernel driver fills all fields of an IEEE 802.1Qaz subcommand,
  so we're leaking up to 58 bytes for ieee_ets structs, up to 136 bytes
  for ieee_pfc structs, etc.,
* the same is true for CEE -- no in-kernel driver fills the whole
  struct,

Prevent all of the above stack info leaks by properly initializing the
buffers/structures involved.

Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/dcb/dcbnl.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -335,6 +335,7 @@ static int dcbnl_getperm_hwaddr(struct n
 	dcb->dcb_family = AF_UNSPEC;
 	dcb->cmd = DCB_CMD_GPERM_HWADDR;
 
+	memset(perm_addr, 0, sizeof(perm_addr));
 	netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
 
 	ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
@@ -1311,6 +1312,7 @@ static int dcbnl_ieee_get(struct net_dev
 
 	if (ops->ieee_getets) {
 		struct ieee_ets ets;
+		memset(&ets, 0, sizeof(ets));
 		err = ops->ieee_getets(netdev, &ets);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
@@ -1318,6 +1320,7 @@ static int dcbnl_ieee_get(struct net_dev
 
 	if (ops->ieee_getpfc) {
 		struct ieee_pfc pfc;
+		memset(&pfc, 0, sizeof(pfc));
 		err = ops->ieee_getpfc(netdev, &pfc);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
@@ -1344,6 +1347,7 @@ static int dcbnl_ieee_get(struct net_dev
 	/* get peer info if available */
 	if (ops->ieee_peer_getets) {
 		struct ieee_ets ets;
+		memset(&ets, 0, sizeof(ets));
 		err = ops->ieee_peer_getets(netdev, &ets);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
@@ -1351,6 +1355,7 @@ static int dcbnl_ieee_get(struct net_dev
 
 	if (ops->ieee_peer_getpfc) {
 		struct ieee_pfc pfc;
+		memset(&pfc, 0, sizeof(pfc));
 		err = ops->ieee_peer_getpfc(netdev, &pfc);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
@@ -1551,6 +1556,7 @@ static int dcbnl_cee_get(struct net_devi
 	/* get peer info if available */
 	if (ops->cee_peer_getpg) {
 		struct cee_pg pg;
+		memset(&pg, 0, sizeof(pg));
 		err = ops->cee_peer_getpg(netdev, &pg);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
@@ -1558,6 +1564,7 @@ static int dcbnl_cee_get(struct net_devi
 
 	if (ops->cee_peer_getpfc) {
 		struct cee_pfc pfc;
+		memset(&pfc, 0, sizeof(pfc));
 		err = ops->cee_peer_getpfc(netdev, &pfc);
 		if (!err)
 			NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);


Patches currently in stable-queue which might be from minipli@xxxxxxxxxxxxxx are

queue-3.0/dcbnl-fix-various-netlink-info-leaks.patch
queue-3.0/rtnl-fix-info-leak-on-rtm_getlink-request-for-vf-devices.patch
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