Description
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.
References (3)
Core 3
Core References
Various Sources
http://xenbits.xen.org/xsa/advisory-494.html
Scores
CVSS v3
8.1
EPSS
0.0035
EPSS Percentile
27.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
Status
published
Products (1)
Xen/Xen
consult Xen advisory XSA-494
Published
Jun 18, 2026
Tracked Since
Jun 18, 2026