Patch "net: fix infoleak in rtnetlink" has been added to the 4.5-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
net: fix infoleak in rtnetlink
to the 4.5-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-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From foo@baz Mon May 16 11:20:33 PDT 2016
From: Kangjie Lu <[email protected]>
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
Content-Transfer-Encoding: 8bit
From: Kangjie Lu <[email protected]>
[ 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”.
--- net/core/rtnetlink.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-)
net/core/rtnetlink.c +10 -8
@@ -1176,14 +1176,16 @@ 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 [email protected] are
queue-4.5/net-fix-infoleak-in-llc.patch queue-4.5/net-fix-a-kernel-infoleak-in-x25-module.patch queue-4.5/net-fix-infoleak-in-rtnetlink.patch