Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out… (CVE-2026-42493)
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.
Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out… (CVE-2026-42493)
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.
CVSS v3.1
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7jxp-562x-944j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-42493"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6941e49c2644c7f86c5d02
Added to database: 07/28/2026, 23:57:24 UTC
Last updated: 07/29/2026, 01:55:52 UTC
Views: 3
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