CVE-2022-42335: Fedoraproject Fedora

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

Affected products

• Fedoraproject Fedora: version 38 only
• Xen Xen: version 4.17.0 only

Published 2023-04-25. Last modified 2026-06-17.