netdev - Re: [PATCH net] rtnl: stats - add missing netlink message size checks

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Date:   Thu, 29 Dec 2016 14:06:09 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     minipli@...glemail.com
Cc:     netdev@...r.kernel.org, roopa@...ulusnetworks.com
Subject: Re: [PATCH net] rtnl: stats - add missing netlink message size
 checks

From: Mathias Krause <minipli@...glemail.com>
Date: Wed, 28 Dec 2016 17:52:15 +0100

> We miss to check if the netlink message is actually big enough to contain
> a struct if_stats_msg.
> 
> Add a check to prevent userland from sending us short messages that would
> make us access memory beyond the end of the message.
> 
> Fixes: 10c9ead9f3c6 ("rtnetlink: add new RTM_GETSTATS message to dump...")
> Signed-off-by: Mathias Krause <minipli@...glemail.com>

Looks good, applied and queued up for -stable.