What is GHSA-7jcv-rhv5-mq52?

GHSA-7jcv-rhv5-mq52 is a security advisory published by GitHub Security Advisories with High severity. Some shadow paging errors paths will switch the page-tables without updating the currently...

Which CVE IDs does GHSA-7jcv-rhv5-mq52 cover?

GHSA-7jcv-rhv5-mq52 covers the following CVE IDs: CVE-2026-42488. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-7jcv-rhv5-mq52?

GHSA-7jcv-rhv5-mq52 has a CVSS v3 base score of 8.1, published by GitHub Security Advisories.

GHSA-7jcv-rhv5-mq52HighCVSS 8.1

Some shadow paging errors paths will switch the page-tables without updating the currently...

Vendor

GitHub Security Advisories

Published

June 18, 2026

Last Modified

June 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-42488 →

📋 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 (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-42488
https://xenbits.xenproject.org/xsa/advisory-494.html
http://www.openwall.com/lists/oss-security/2026/06/09/14
http://xenbits.xen.org/xsa/advisory-494.html
https://github.com/advisories/GHSA-7jcv-rhv5-mq52