Microsoft yesterday released KB4469220 Update for Windows 10 Mobile (OS Build 15254.541) addressing vulnerabilities. As expected, no new features are being introduced in this update.
- Provides protections against an additional subclass of speculative execution side-channel vulnerability known as Speculative Store Bypass (CVE-2018-3639) for AMD-based computers. These protections aren’t enabled by default. For Windows client (IT pro) guidance, follow the instructions in KB4073119. For Windows Server guidance, follow the instructions in KB4072698. Use these guidance documents to enable mitigations for Speculative Store Bypass (CVE-2018-3639). Additionally, use the mitigations that have already been released for Spectre Variant 2 (CVE-2017-5715) and Meltdown (CVE-2017-5754).
- Security updates to Windows Scripting, Internet Explorer, Microsoft Edge, Windows App Platform and Frameworks, Windows Graphics, Windows Kernel, and Windows Server.
The update can be downloaded by Checking for Updates in Settings.