Intel has released patches for Meltdown and Specter, the two CPU vulnerabilities found earlier. But because of the patch, there are problems, so Microsoft has made an urgent change, and released an emergency patch to resolve the issue.
Intel said the emergency security patch has received users post-installation feedback and it has emerged that the Specter variant 2 consolidation patch has some unstable (random restart) issues on some Windows devices.
In response, Microsoft said the tests conducted have shown that data loss and corruption have occurred in the context of system instability. Today a non-modal update KB4078130, specifically related to the CVE-2017-5715 bug fixes, has been released. It effectively prevented the behavior described above.
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This update covers Windows 7 (SP1), Windows 8.1, and all Windows 10 editions, covering the desktop and server. If your device has an impact, you can go to the Microsoft Update Catalog website for download.
Earlier in the day, researchers such as Google Project Zero and the Austrian Graz Technical University officially disclosed three processor high-risk vulnerabilities this month, numbering CVE-2017-5753 (Variant 1), CVE-2017-5715 Variant 2) and CVE-2017-5754 (Variant 3). The first two vulnerabilities are called Specter and the second one is called Meltdown. Specter Variant 1 affects AMD, Intel and ARM processors, and all three vulnerabilities affect Intel processors. Researchers have developed proof-of-concept exploits.