Xen Security Advisory 523 v2 (CVE-2026-102703,CVE-2026-102704)

Xen Security Advisory 523 v2 (CVE-2026-102703,CVE-2026-102704) - arbitrary read/write via grant copy

Summary by Cyber Security News3 Nov 2026, 20:53 CET

About this summary. This is a short excerpt from the description that oss-security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://seclists.org/oss-sec/2026/q4/481

Posted by Xen . org security team on Nov 03 Xen Security Advisory CVE-2026-102703,CVE-2026-102704 / XSA-523 version 2 arbitrary read/write via grant copy UPDATES IN VERSION 2 Public release. ISSUE DESCRIPTION A common access pattern is a batch of Grant Copy operations acting on adjacent address ranges in the same source or destination page. For performance reasons, Xen caches details...

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