CVE-2026-42487

Name of the Vulnerable Software and Affected Versions Xen (affected versions not specified)

Description HVM guest I/O port accesses require either emulation or translation. These translations are managed by the device model through 'XEN DOMCTL ioport mapping'. The linked list used for these translations can change at any time, but the traversal of these lists during guest I/O port access handling lacked the necessary synchronization with updates.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.