linux-kernel - Re: net/sctp: use-after-free in __sctp

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Message-ID: <20161019165754.GD2958@localhost.localdomain>
Date:   Wed, 19 Oct 2016 14:57:54 -0200
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     Andrey Konovalov <andreyknvl@...gle.com>
Cc:     Vlad Yasevich <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-sctp@...r.kernel.org, netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>,
        Kostya Serebryany <kcc@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Sasha Levin <sasha.levin@...cle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: net/sctp: use-after-free in __sctp_connect

On Wed, Oct 19, 2016 at 02:25:24PM +0200, Andrey Konovalov wrote:
> Hi,
> 
> I've got the following error report while running the syzkaller fuzzer:
> 
> ==================================================================
> BUG: KASAN: use-after-free in __sctp_connect+0xabe/0xbf0 at addr
> ffff88006b1dc610

Seems this is the same that Dmitry Vyukov had reported back in Jan 13th.
So far I couldn't identify the reason.
"Good" to know it's still there, thanks for reporting it.