linux-kernel - Re: Remaining crypto API regressions with CONFIG_VMAP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALCETrVBGPijiacbY-trdbgRPYC8grNrGA7TVu0xvxUaqud08w@mail.gmail.com>
Date:   Sun, 11 Dec 2016 11:13:55 -0800
From:   Andy Lutomirski <luto@...capital.net>
To:     Eric Biggers <ebiggers3@...il.com>
Cc:     linux-crypto@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "kernel-hardening@...ts.openwall.com" 
        <kernel-hardening@...ts.openwall.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Andrew Lutomirski <luto@...nel.org>,
        Stephan Mueller <smueller@...onox.de>
Subject: Re: Remaining crypto API regressions with CONFIG_VMAP_STACK

On Fri, Dec 9, 2016 at 3:08 PM, Eric Biggers <ebiggers3@...il.com> wrote:
> In the 4.9 kernel, virtually-mapped stacks will be supported and enabled by
> default on x86_64.  This has been exposing a number of problems in which
> on-stack buffers are being passed into the crypto API, which to support crypto
> accelerators operates on 'struct page' rather than on virtual memory.
>

>         fs/cifs/smbencrypt.c:96

This should use crypto_cipher_encrypt_one(), I think.

--Andy