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Message-Id: <20180307.133651.2158882031803330781.davem@davemloft.net>
Date: Wed, 07 Mar 2018 13:36:51 -0500 (EST)
From: David Miller <davem@...emloft.net>
To: eric.dumazet@...il.com
Cc: netdev@...r.kernel.org, jchapman@...alix.com, g.nault@...halink.fr
Subject: Re: [PATCH net] l2tp: do not accept arbitrary sockets
From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 06 Mar 2018 07:54:53 -0800
> From: Eric Dumazet <edumazet@...gle.com>
>
> syzkaller found an issue caused by lack of sufficient checks
> in l2tp_tunnel_create()
>
> RAW sockets can not be considered as UDP ones for instance.
>
> In another patch, we shall replace all pr_err() by less intrusive
> pr_debug() so that syzkaller can find other bugs faster.
...
> Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>
Applied and queued up for -stable, thanks.
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