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CVE-2022-42335

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CVE-2022-42335

Published: Apr 25, 2023

Modified: Aug 3, 2024

PUBLISHED

Description

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.

VendorProductVersions

Xen

xen

unknown
consult Xen advisory XSA-430

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