CVE-2023-34326

HighCVSS 7.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-672

Affected software

No affected versions have been published.

Timeline

Published
Jan 5, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-34326: High severity, CVSS 7.8 | Vulnix