CVE-2026-53359 and OpenStack: Our Response to a KVM/x86 Compute Isolation Issue
Our technical assessment of CVE-2026-53359, the Linux KVM/x86 vulnerability known as Januscape, and its impact on OpenStack compute operations.
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"Working with VEXXHOST feels like having a trusted advisor rather than just a service provider. Their team goes above and beyond to understand our unique business needs and provide tailored solutions. With their consultative approach, we've been able to make seamless transitions between vendors, and it's been a game changer for our OpenStack implementation."
Tim Gunter
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Vanilla Forums
"VEXXHOST did a great job performing an in-place upgrade of our OpenStack cluster to their Atmosphere platform. The team worked efficiently and performed the upgrade with limited downtime. They went above and beyond to help us debug, post-upgrade networking bugs. Lightcast is very happy with the end result and we look forward to operating a much more stable and maintainable OpenStack cluster!"
Curtis Spencer
Senior Infrastructure Engineer
Lightcast
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Salvatore Guercio
Systems Administrator
Center for Computational Research
"Initially, we ran half a trillion links across 70 nodes, taking 80 to 90 days. However, since transitioning to the Atmosphere platform, the same task now takes just 3 days. This significant improvement in efficiency has saved us time, allowing focus on other critical work aspects. The platform's reliability and performance have truly impressed us."
Jin Lee
Senior Data Scientist
Opta Information Intelligence
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