linux-kernel - Re: [PATCH v12 00/18] Enable FSGSBASE instructions

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: <20200515230740.GG29995@sasha-vm>
Date:   Fri, 15 May 2020 19:07:40 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        linux-kernel@...r.kernel.org, tglx@...utronix.de, bp@...en8.de,
        luto@...nel.org, hpa@...or.com, dave.hansen@...el.com,
        tony.luck@...el.com, ravi.v.shankar@...el.com,
        chang.seok.bae@...el.com
Subject: Re: [PATCH v12 00/18] Enable FSGSBASE instructions

On Fri, May 15, 2020 at 10:55:50AM -0700, Andi Kleen wrote:
>> Indeed, we've seen a few hacks that basically just enable FSGSBASE:
>>
>> - https://github.com/oscarlab/graphene-sgx-driver
>> - https://github.com/occlum/enable_rdfsbase
>>
>> And would very much like to get rid of them...
>
>These are insecure and open root holes without the patches
>used here.

It's sad that these hacks are being used alongside SGX on "secure"
systems.

-- 
Thanks,
Sasha