From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Harald Freudenberger <freude@linux.vnet.ibm.com>,
linux-crypto@vger.kernel.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>,
Harald Freudenberger <freude@de.ibm.com>
Subject: Re: [PATCH] s390/crypto: fix aes ctr concurrency issue
Date: Fri, 22 Nov 2013 14:58:40 +0100 [thread overview]
Message-ID: <20131122145840.5013bf02@vbox-ubuntu> (raw)
In-Reply-To: <1384856532-17247-1-git-send-email-freude@linux.vnet.ibm.com>
On Tue, 19 Nov 2013 11:22:11 +0100
Harald Freudenberger <freude@linux.vnet.ibm.com> wrote:
> The aes-ctr mode used one preallocated page without any concurrency
> protection. When multiple threads run aes-ctr encryption or decryption
> this could lead to data corruption.
>
> The patch introduces locking for the preallocated page and
> alternatively allocating and freeing of an temp page in concurrency
> situations.
>
> Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
>
> Harald Freudenberger (1):
> s390/crypto: fix aes ctr concurrency issue
>
> arch/s390/crypto/aes_s390.c | 55
> ++++++++++++++++++++++++++++++++---------- 1 files changed, 42
> insertions(+), 13 deletions(-)
Herbert, could you please add Cc: stable@vger.kernel.org to this?
prev parent reply other threads:[~2013-11-22 13:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 10:22 [PATCH] s390/crypto: fix aes ctr concurrency issue Harald Freudenberger
2013-11-19 10:22 ` Harald Freudenberger
2013-11-28 14:00 ` Herbert Xu
2013-11-28 15:39 ` Harald Freudenberger
2013-11-29 1:50 ` Herbert Xu
2013-11-29 8:58 ` Harald Freudenberger
2013-11-22 13:58 ` Gerald Schaefer [this message]
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