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.
Analysis and contextual insights are available on OpenCVE Cloud.
Vendor Workaround
Running only HVM or PVH guests will avoid the vulnerability. Running PV guests in the PV shim will also avoid the vulnerability.
Tracking
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No advisories yet.
| Link | Providers |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-494.html |
|
Thu, 18 Jun 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Xen
Xen xen |
|
| Vendors & Products |
Xen
Xen xen |
Thu, 18 Jun 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | x86: mismatched mapcache metadata | |
| Weaknesses | CWE-119 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: XEN
Published:
Updated: 2026-06-18T15:07:35.190Z
Reserved: 2026-04-27T14:20:24.138Z
Link: CVE-2026-42488
Updated: 2026-06-18T15:07:35.190Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-18T21:30:16Z