A time-of-check to time-of-use (TOCTOU) race condition in the AMD SEV Secure Encrypted Virtualization (SEV) firmware could allow an attacker with administrative privileges to bypass security checks on scatter lists, potentially resulting in loss of guest integrity.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 11 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
Title TOCTOU race in AMD SEV enables security check bypass, risking guest integrity

Tue, 10 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
Description A time-of-check to time-of-use (TOCTOU) race condition in the AMD SEV Secure Encrypted Virtualization (SEV) firmware could allow an attacker with administrative privileges to bypass security checks on scatter lists, potentially resulting in loss of guest integrity.
Weaknesses CWE-367
References
Metrics cvssV4_0

{'score': 4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-11-10T21:44:27.705Z

Reserved: 2025-07-23T15:01:50.733Z

Link: CVE-2025-54506

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T22:17:46.640

Modified: 2026-11-10T22:17:46.640

Link: CVE-2025-54506

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-11T12:00:23Z

Weaknesses