From: Herbert Xu <herbert@gondor.apana.org.au>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Eric Biggers <ebiggers3@gmail.com>,
linux-crypto@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"kernel-hardening@lists.openwall.com"
<kernel-hardening@lists.openwall.com>,
Andrew Lutomirski <luto@kernel.org>,
Stephan Mueller <smueller@chronox.de>
Subject: Re: Remaining crypto API regressions with CONFIG_VMAP_STACK
Date: Sat, 10 Dec 2016 13:32:08 +0800 [thread overview]
Message-ID: <20161210053208.GA27951@gondor.apana.org.au> (raw)
In-Reply-To: <CALCETrW=+3u3P8Xva+0ck9=fr-mD6azPtTkOQ3uQO+GoOA6FcQ@mail.gmail.com>
On Fri, Dec 09, 2016 at 09:25:38PM -0800, Andy Lutomirski wrote:
>
> > The following crypto drivers initialize a scatterlist to point into an
> > ablkcipher_request, which may have been allocated on the stack with
> > SKCIPHER_REQUEST_ON_STACK():
> >
> > drivers/crypto/ccp/ccp-crypto-aes-xts.c:162
> > drivers/crypto/ccp/ccp-crypto-aes.c:94
>
> These are real, and I wish I'd known about them sooner.
Are you sure? Any instance of *_ON_STACK must only be used with
sync algorithms and most drivers under drivers/crypto declare
themselves as async.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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next prev parent reply other threads:[~2016-12-10 5:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-09 23:08 Eric Biggers
2016-12-10 5:25 ` Andy Lutomirski
2016-12-10 5:32 ` Herbert Xu [this message]
2016-12-10 6:03 ` [kernel-hardening] " Eric Biggers
2016-12-10 8:16 ` Herbert Xu
2016-12-10 8:39 ` Eric Biggers
2016-12-10 5:37 ` Herbert Xu
2016-12-10 6:30 ` [kernel-hardening] " Eric Biggers
2016-12-10 14:45 ` Jason A. Donenfeld
2016-12-10 17:48 ` Andy Lutomirski
2016-12-10 5:55 ` Eric Biggers
2016-12-11 19:13 ` Andy Lutomirski
2016-12-11 23:31 ` Eric Biggers
2016-12-12 18:34 ` Andy Lutomirski
2016-12-12 18:45 ` Gary R Hook
2016-12-13 3:39 ` Herbert Xu
2016-12-13 3:39 ` Herbert Xu
2016-12-13 17:06 ` Andy Lutomirski
2016-12-14 4:56 ` Herbert Xu
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