Xen Security Advisory 442 v2 (CVE-2023-34326) – x86/AMD: missing IOMMU TLB flushing

Xen Security Advisory 442 v2 (CVE-2023-34326) – x86/AMD: missing IOMMU TLB flushing

Open Source Security 

Posted by Xen . org security team on Oct 10

Xen Security Advisory CVE-2023-34326 / XSA-442
version 2

x86/AMD: missing IOMMU TLB flushing

UPDATES IN VERSION 2
====================

Public release.

ISSUE DESCRIPTION
=================

The caching invalidation guidelines from the AMD-Vi specification (48882—Rev
3.07-PUB—Oct 2022) is incorrect on some hardware, as devices will malfunction
(see stale DMA mappings) if some…
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