Ever since the Meltdown and Spectre exploits were exposed, Microsoft has been working overtime to patch Windows against them. Unfortunately, they were quite secretive about their Spectre and Meltdown patch list and schedule. We usually only find out when something bad happens, like when some patches bricked AMD systems.
They changed that stance recently, quietly releasing their Windows Spectre and Meltdown patch schedule. This schedule listed the patches they have released so far, or are about to release. For your convenience, we have divided and sorted them according to the applicable Windows version.
Please note that the current Microsoft Spectre and Meltdown patch schedule covers the January and February 2018. We will update the schedule as and when Microsoft releases them.
Article Update History
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Updated @ 2018-02-22 :Added the late January and early February 2018 Spectre and Meltdown patch schedule for Windows 10 and Windows Server 2016.
Originally posted @ 2018-01-24
The Spectre + Meltdown Patch Schedule For Windows 10
You may recall our extensive coverage of Intel’s buggy Spectre 2 patches that were causing random and spontaneous reboots in over 800 CPU models. It’s gotten so bad that Microsoft was forced to issue KB4078130 – an emergency update to disable the Intel Spectre 2 mitigations that were causing the spontaneous reboots.
Spectre Variant 2
Colloquially known as Spectre 2, it is more accurately known as Spectre Variant 2, Google Project Zero Variant 2 (GPZ Variant 2), or officially as CVE-2017-5715.
After deploying the Spectre 2 patches in their new microcode updates, Intel started receiving reports of “higher than expected reboots and other unpredictable system behaviour“.
Microsoft confirmed this, stating further that their “own experience is that system instability can in some circumstances cause data loss or corruption“.
KB4078130 : Update To Disable Mitigation Against Spectre, Variant 2
Unwilling to wait for Intel to fix the problem, Microsoft decided to issue KB4078130 – an “out of band” or emergency update. All it does is disable the mitigation against Spectre 2.
Their tests proved that this update is sufficient to prevent the random and spontaneous reboots experienced by the affected Intel processors.