CVE-2026-42488
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk27th percentile — higher than 27% of all known CVEs
Summary
In some shadow paging error paths, page tables may be switched without updating the currently running vCPU reference. This can lead to a mismatch between the loaded page tables and the mapcache metadata, potentially resulting in corruption of the mapcache.
Risk Assessment
This mismatch can lead to serious data integrity issues, threatening system stability and potentially resulting in data loss.
Recommendation
It is recommended to monitor and update the system to fix shadow paging errors and ensure that all components are compliant with the latest patches.
Original NVD description (English source)
Some shadow paging errors paths will switch the page-tables without updating the currently running vCPU reference. This causes a mismatch between the loaded page-tables and the mapcache metadata which can lead to corruption of the mapcache.