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Author Topic: new Spectre-like attack: VMScape  (Read 633 times)

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Offline madiresTopic starter

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new Spectre-like attack: VMScape
« on: September 11, 2025, 07:47:02 pm »
Media:
- New VMScape attack breaks guest-host isolation on AMD, Intel CPUs - https://www.bleepingcomputer.com/news/security/new-vmscape-attack-breaks-guest-host-isolation-on-amd-intel-cpus/
- Spectre haunts CPUs again: VMSCAPE vulnerability leaks cloud secrets - https://www.theregister.com/2025/09/11/vmscape_spectre_vulnerability/

Researchers:
- VMScape: Exposing and Exploiting Incomplete Branch Predictor Isolation in Cloud Environments - https://comsec.ethz.ch/research/microarch/vmscape-exposing-and-exploiting-incomplete-branch-predictor-isolation-in-cloud-environments/

Affected CPUs:
- AMD Zen 1 to 5
- Intel Coffee Lake
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Online SiliconWizard

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Re: new Spectre-like attack: VMScape
« Reply #1 on: September 11, 2025, 08:21:42 pm »
It has been quickly addressed in Linux 6.16.7 - provided that the fix actually works.
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Offline madiresTopic starter

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Re: new Spectre-like attack: VMScape
« Reply #2 on: September 12, 2025, 09:15:37 am »
And in kernel 6.12.47 (released yesterday).
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