CVE-2026-42488
x86: mismatched mapcache metadata
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.
INFO
Published Date :
June 18, 2026, 1:47 p.m.
Last Modified :
June 18, 2026, 1:47 p.m.
Remotely Exploit :
No
Source :
XEN
Affected Products
The following products are affected by CVE-2026-42488
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the affected software.
- Verify page-table update logic.
- Ensure mapcache metadata consistency.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42488 vulnerability anywhere in the article.