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Windows 11: Fixed vulnerabilities with Intel CPUs

March 7, 2023


Windows 11: Fixed vulnerabilities with Intel CPUs

Microsoft has fixed the Memory Mapped I/O Stale Data bugs on Windows 11 in Intel CPUs disclosed by the same manufacturer on June 14 last year.

Bug fix updates in Intel CPUs on Windows 11

Microsoft has announced that it has started the distribution of a set of corrective updates for Windows 10, Windows 11, Windows Server 2016, Windows Server 2019 and Windows Server 2022.
These updates make it possible to address the scenario described by Intel in June 2022, when the company had warned about the possibility of side-channel attacks that could allow processes running in a virtual machine to access data managed by another machine virtual.
Updates are released as manual updates in the Microsoft Update Catalog:

.KB5019180 - Windows 10, version 20H2, 21H2 and 22H2
.KB5019177 - Windows 11, version 21H2
.KB5019178 - Windows 11, version 22H2
.KB5019182 - Windows Server 2016
.KB5019181 - Windows Server 2019
.KB5019106 - Windows Server 2022

These are patches that address the following four security vulnerabilities:

.CVE-2022-21123 - Shared Buffer Data Read (SBDR)
.CVE-2022-21125 - Shared Buffer Data Sampling (SBDS)
.CVE-2022-21127 - Special register buffer data sampling update (SRBDS update)
.CVE-2022-21166 - Partial Device Registry Write (DRPW)

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