This is a note to let you know that I've just added the patch titled
net: fix infoleak in rtnetlink
to the 4.4-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:
net-fix-infoleak-in-rtnetlink.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon May 16 11:21:32 PDT 2016
From: Kangjie Lu <kangjielu@xxxxxxxxx>
Date: Tue, 3 May 2016 16:46:24 -0400
Subject: net: fix infoleak in rtnetlink
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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From: Kangjie Lu <kangjielu@xxxxxxxxx>
[ Upstream commit 5f8e44741f9f216e33736ea4ec65ca9ac03036e6 ]
The stack object “map” has a total size of 32 bytes. Its last 4
bytes are padding generated by compiler. These padding bytes are
not initialized and sent out via “nla_put”.
Signed-off-by: Kangjie Lu <kjlu@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/core/rtnetlink.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1175,14 +1175,16 @@ static noinline_for_stack int rtnl_fill_
static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev)
{
- struct rtnl_link_ifmap map = {
- .mem_start = dev->mem_start,
- .mem_end = dev->mem_end,
- .base_addr = dev->base_addr,
- .irq = dev->irq,
- .dma = dev->dma,
- .port = dev->if_port,
- };
+ struct rtnl_link_ifmap map;
+
+ memset(&map, 0, sizeof(map));
+ map.mem_start = dev->mem_start;
+ map.mem_end = dev->mem_end;
+ map.base_addr = dev->base_addr;
+ map.irq = dev->irq;
+ map.dma = dev->dma;
+ map.port = dev->if_port;
+
if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
return -EMSGSIZE;
Patches currently in stable-queue which might be from kangjielu@xxxxxxxxx are
queue-4.4/net-fix-infoleak-in-llc.patch
queue-4.4/net-fix-a-kernel-infoleak-in-x25-module.patch
queue-4.4/net-fix-infoleak-in-rtnetlink.patch
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