CVE-2023-34326

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 fields of the DTE are updated but the IOMMU TLB is not flushed.

Such stale DMA mappings can point to memory ranges not owned by the guest, thus allowing access to unindented memory regions.

CVSS Version 3.1

nvd
CVE ID: CVE-2023-34326
Base Score: 7.8
Base Severity: HIGH
Vector String:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8

Refrence: NVD

Description​

Description