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: <ac7edbf7ad681ab762998e3aa1ed118b2cbdf47a.camel@linux.intel.com>
Date:   Sat, 16 May 2020 15:21:06 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Andi Kleen <ak@...ux.intel.com>, Sasha Levin <sashal@...nel.org>
Cc:     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, 2020-05-15 at 10:55 -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.
> 
> -Andi

Yup, totally. 

/Jarkko