Posted by Xen . org security team on Oct 13 Xen Security Advisory CVE-2026-79609 / XSA-516 version 2 x86: XPTI may break on huge-memory systems UPDATES IN VERSION 2 Public release. ISSUE DESCRIPTION XPTI (Xen Page Table Isolation) was introduced to mitigate Meltdown (CVE-2017-5754, one aspect of XSA-254). This involves copying 64-bit PV guest page table entries from guest-chosen root page...
Xen Security Advisory 516 v2 (CVE-2026-79609) - x86: XPTI may break on huge-memory systems
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