From: Stephan Mueller <smueller@chronox.de>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Dmitry Vyukov <dvyukov@google.com>,
"David S. Miller" <davem@davemloft.net>,
linux-crypto@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
syzkaller <syzkaller@googlegroups.com>,
Kostya Serebryany <kcc@google.com>,
Alexander Potapenko <glider@google.com>,
Sasha Levin <sasha.levin@oracle.com>,
Eric Dumazet <edumazet@google.com>
Subject: Re: [PATCH v2] crypto: af_alg - Disallow bind/setkey/... after accept(2)
Date: Sat, 02 Jan 2016 10:20:16 +0100 [thread overview]
Message-ID: <1722859.P06iN7WPkX@myon.chronox.de> (raw)
In-Reply-To: <65988221.D1d1cZYMWB@myon.chronox.de>
Am Freitag, 1. Januar 2016, 21:12:40 schrieb Stephan Mueller:
Hi Herbert,
> Am Mittwoch, 30. Dezember 2015, 11:47:53 schrieb Herbert Xu:
>
> Hi Herbert,
>
> > On Tue, Dec 29, 2015 at 07:36:14PM +0100, Dmitry Vyukov wrote:
> > > Hello,
> > >
> > > On commit 8513342170278468bac126640a5d2d12ffbff106
> > > + crypto: algif_skcipher - Use new skcipher interface
> > > + crypto: algif_skcipher - Require setkey before accept(2)
> > > + crypto: af_alg - Disallow bind/setkey/... after accept(2)
> >
> > OK there is a silly bug in the last patch. Here is an updated
> > version.
>
> With this patch, the AF_ALG interface stops working. I tested the HMAC
> operation and I am unable to set the key with the following call:
>
> ret = setsockopt(handle->tfmfd, SOL_ALG, ALG_SET_KEY, key, keylen);
>
> This call returns EBUSY.
Please disregard my email. I did not update my library to the newly requested
order of performing the setkey before the accept call. After the update of my
library I can confirm that the modification works for all AF_ALG interfaces.
--
Ciao
Stephan
prev parent reply other threads:[~2016-01-02 9:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 18:36 crypto: deadlock in alg_setsockopt Dmitry Vyukov
2015-12-30 3:47 ` [PATCH v2] crypto: af_alg - Disallow bind/setkey/... after accept(2) Herbert Xu
2016-01-01 20:12 ` Stephan Mueller
2016-01-02 9:20 ` Stephan Mueller [this message]
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