FreeBSD Security Advisory FreeBSD-SA-12:04.sysret
John Baldwin
jhb at freebsd.org
Thu Jun 14 15:09:45 UTC 2012
On Wednesday, June 13, 2012 6:37:58 pm Greg Lewis wrote:
> On Tue, Jun 12, 2012 at 01:26:33PM +0000, FreeBSD Security Advisories wrote:
> > IV. Workaround
> >
> > No workaround is available.
> >
> > However FreeBSD/amd64 running on AMD CPUs is not vulnerable to this
> > particular problem.
> >
> > Systems with 64 bit capable CPUs, but running the 32 bit FreeBSD/i386
> > kernel are not vulnerable, nor are systems running on different
> > processor architectures.
>
> I found these last two paragraphs a little confusing. Is the correct
> interpretation that FreeBSD/amd64 running on Intel CPUs is the vulnerable
> combination?
It is only know that AMD CPUs are safe. It is not known if non-AMD, non-Intel
CPUs (e.g. the 64-bit capable VIA CPUs) are vulnerable.
--
John Baldwin
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