Can someone shed some more light on the stability issues that this update addresses? Is there a way to tell if a machine is having these problems? I had just updated my servers and would rather not have to do it again so soon. thanks, Steve Gaarder System Administrator, Dept of Mathematics Cornell University, Ithaca, NY, USA [log in to unmask] On Wed, 17 Jan 2018, Pat Riehecky wrote: > Synopsis: Important: microcode_ctl security update > Advisory ID: SLSA-2018:0093-1 > Issue Date: 2018-01-16 > CVE Numbers: CVE-2017-5715 > -- > > This update supersedes the previous microcode update provided with the > CVE-2017-5715 (Spectre) CPU branch injection vulnerability mitigation. > Further testing has uncovered problems with the microcode provided along > with the Spectre mitigation that could lead to system instabilities. > > As a result, this microcode update reverts to the last known good > microcode version dated before 03 January 2018. > > You should contact your hardware provider for the latest microcode updates. > > IMPORTANT: If you are using Intel Skylake-, Broadwell-, and Haswell-based > platforms, obtain and install updated microcode from your hardware > vendor immediately. The "Spectre" mitigation requires both an updated > kernel and updated microcode from your hardware vendor. > -- > > SL6 > x86_64 > microcode_ctl-1.17-25.4.el6_9.x86_64.rpm > microcode_ctl-debuginfo-1.17-25.4.el6_9.x86_64.rpm > microcode_ctl-1.17-20.2.el6_7.x86_64.rpm > microcode_ctl-debuginfo-1.17-20.2.el6_7.x86_64.rpm > microcode_ctl-1.17-19.2.el6_6.x86_64.rpm > microcode_ctl-debuginfo-1.17-19.2.el6_6.x86_64.rpm > i386 > microcode_ctl-1.17-25.4.el6_9.i686.rpm > microcode_ctl-debuginfo-1.17-25.4.el6_9.i686.rpm > SL7 > x86_64 > microcode_ctl-2.1-22.5.el7_4.x86_64.rpm > microcode_ctl-debuginfo-2.1-22.5.el7_4.x86_64.rpm > microcode_ctl-2.1-16.5.el7_3.x86_64.rpm > microcode_ctl-debuginfo-2.1-16.5.el7_3.x86_64.rpm > microcode_ctl-2.1-12.el7_2.3.x86_64.rpm > microcode_ctl-debuginfo-2.1-12.el7_2.3.x86_64.rpm > > - Scientific Linux Development Team >