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Vulnerabilities CVE-2026-42493

CVE-2026-42493

None
Open
TLP:CLEAR

x86 shadow paging is deprecated

AI Analysis

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Description

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality, while still retaining it for people to use at their own (security) risk. Memory-wise small enough guests may still be okay to run.

Details

EPSS Score
0.47%

38.6th percentile

Confidence
90%
Published
Jul 28, 2026
Last Modified
Jul 28, 2026
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