Key Points
- Microsoft releases Windows 10 22H2 Build 19045.5794 (KB5055612) to the Release Preview Channel for Insiders.
- The update fixes a case-sensitive issue affecting GPU paravirtualization in Windows Subsystem for Linux 2 (WSL2).
- Enhanced security measures include updates to the Windows Kernel Vulnerable Driver Blocklist to prevent BYOVD attacks.
Microsoft Rolls Out Windows 10 Update to Release Preview Channel
Microsoft announced the release of Windows 10 22H2 Build 19045.5794 (KB5055612) to the Release Preview Channel, specifically targeting Insiders running Windows 10, version 22H2. This update focuses on refining functionality and bolstering security within the Windows ecosystem.
Targeting Insiders for Feedback
The release is part of Microsoft’s ongoing effort to engage with the Windows Insider Program community, relying on user feedback to refine updates before broader deployment. By making the update available exclusively to the Release Preview Channel, Microsoft underscores its commitment to iterative testing and community-driven development.
Graphics Enhancements for WSL2
A key improvement in this build addresses a case-sensitive check for GPU paravirtualization within Windows Subsystem for Linux 2 (WSL2). Previously, this sensitivity could lead to GPU paravirtualization support failures, hindering performance in compatible environments. Microsoft’s adjustment ensures a more seamless experience for Insiders leveraging WSL2 for development or computational tasks.
Boosted Security Against BYOVD Attacks
In a significant security update, Microsoft has enhanced the Windows Kernel Vulnerable Driver Blocklist (DriverSiPolicy.p7b). This measure specifically targets Bring Your Own Vulnerable Driver (BYOVD) attacks, a tactic where malicious actors exploit known-vulnerable drivers to compromise system security. By blocking drivers with identified vulnerabilities, Microsoft aims to preempt such attacks, further safeguarding the Windows 10 user base.
Implications and Next Steps
With this release, Microsoft reinforces its dual focus on performance optimization and security hardening within the Windows 10 framework. Insiders on the Release Preview Channel are encouraged to install the update and provide feedback, which will inform future refinements. As the update undergoes testing, a broader rollout can be anticipated, contingent upon the feedback received and the identification of any emerging issues. For now, the Windows Insider Program Team continues to monitor the update’s performance, ensuring a stable and secure computing environment for all Windows users.
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