linux-kernel - Re: KASAN: use-after-free Read in aead

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Message-ID: <2409323.isfI9bk5QC@positron.chronox.de>
Date:   Mon, 27 Nov 2017 23:02:08 +0100
From:   Stephan Müller <smueller@...onox.de>
To:     syzbot 
        <bot+6fbc13c3b1ed2105e7a2e516be43d6a0624a59c0@...kaller.appspotmail.com>
Cc:     davem@...emloft.net, herbert@...dor.apana.org.au,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in aead_recvmsg

Am Montag, 27. November 2017, 19:56:46 CET schrieb syzbot:

Hi,

> Hello,
> 
> syzkaller hit the following crash on
> 6fc478f80f6809cc4b1a4230f47a62d3b7378dc0
> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached
> Raw console output is attached.
> C reproducer is attached
> syzkaller reproducer is attached. See https://goo.gl/kgGztJ
> for information about syzkaller reproducers

Could you please re-perform the test applying the patch https://
git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6.git/commit/?
id=8e1fa89aa8bc2870009b4486644e4a58f2e2a4f5 ?

At least I am not able to reproduce that issue using the repro.c with the 
patch applied.

Thanks a lot.

Ciao
Stephan