netdev - Re: [PATCH v2 net] ping: implement proper locking

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Message-Id: <20170324.205104.1461669236183327007.davem@davemloft.net>
Date:   Fri, 24 Mar 2017 20:51:04 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     netdev@...r.kernel.org, solar@...nwall.com, andreyknvl@...gle.com,
        edumazet@...gle.com, danieljiang0415@...il.com
Subject: Re: [PATCH v2 net] ping: implement proper locking

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Fri, 24 Mar 2017 19:36:13 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> We got a report of yet another bug in ping
> 
> http://www.openwall.com/lists/oss-security/2017/03/24/6
> 
> ->disconnect() is not called with socket lock held.
> 
> Fix this by acquiring ping rwlock earlier.
> 
> Thanks to Daniel, Alexander and Andrey for letting us know this problem.
> 
> Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: Daniel Jiang <danieljiang0415@...il.com>
> Reported-by: Solar Designer <solar@...nwall.com>
> Reported-by: Andrey Konovalov <andreyknvl@...gle.com>

Applied and queued up for -stable, thanks.