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

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Message-ID: <7081028.ZNJKGTzsya@tauon.chronox.de>
Date:   Wed, 20 Dec 2017 10:29:05 +0100
From:   Stephan Mueller <smueller@...onox.de>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     syzbot 
        <bot+e5e6fab2d4dc3d9877ac240fed364027bb960ad0@...kaller.appspotmail.com>,
        David Miller <davem@...emloft.net>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        linux-crypto@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in crypto_aead_free_instance

Am Mittwoch, 20. Dezember 2017, 10:19:43 CET schrieb Dmitry Vyukov:

Hi Dmitry,
> > 
> > This issue vanishes after applying the patch "[PATCH v2] crypto: AF_ALG -
> > limit mask and type".
> 
> Hi Stephan,
> 
> syzbot does not understand arbitrary English prose, it only understands 
this:
> > Once a fix for this bug is merged into any tree, reply to this email with:
> > #syz fix: exact-commit-title
> 
> Let's tell it about the fix:
> 
> #syz fix: crypto: AF_ALG - limit mask and type

I have seen that this is the approach, but the fix is not yet in the tree. I 
just want to let folks know that there is a patch.


Ciao
Stephan