Re: OpenBSD Errata: June 17th, 2018 (intelfpu)

On Sun, Jun 17, 2018 at 09:29:48AM -0400, T.J. Townsend wrote:
> Errata patches for x86 floating-point units have been released for OpenBSD 6.3.
>
> Intel CPUs speculatively access FPU registers even when the FPU is disabled,
> so data (including AES keys) from previous contexts could be discovered if
> using the lazy-save approach.
>
> Binary updates for the amd64 platform are available via the syspatch utility.
> Source code patches can be found on the errata page:
>
> https://www.openbsd.org/errata63.html
>
> As this affects the kernel, a reboot will be needed after patching.
>

Errata patches and binary updates for this issue are now also available
for OpenBSD 6.2/amd64:

https://www.openbsd.org/errata62.html