OpenBSD Errata: May 29th, 2019 (mds)

28 May, 2019 by tj@openbsd.org | openbsd

Errata patches for the kernel have been released for OpenBSD 6.4 and 6.5.

Intel CPUs have a cross privilege side-channel attack. (MDS)

Binary updates for the amd64 platform are available via the syspatch utility.
Source code patches can be found on the respective errata page:

  https://www.openbsd.org/errata64.html
  https://www.openbsd.org/errata65.html

After patching, run fw_update to get the new CPU microcode, then reboot.