Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-33434 Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2024-09-17T00:36:13.880Z

Reserved: 2022-03-31T00:00:00

Link: CVE-2021-46778

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-08-10T20:15:24.717

Modified: 2024-11-21T06:34:42.120

Link: CVE-2021-46778

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-08-09T06:30:00Z

Links: CVE-2021-46778 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses