Sequence of Processor Instructions Leads to Unexpected Behavior Affecting microcode_ctl package, versions <2:2.1-47.amzn2.4.23


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2-MICROCODECTL-9299432
  • published7 Mar 2025
  • disclosed12 Feb 2025

Introduced: 12 Feb 2025

NewCVE-2024-37020  (opens in a new tab)
CWE-1281  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 microcode_ctl to version 2:2.1-47.amzn2.4.23 or higher.
This issue was patched in ALAS2-2025-2787.

NVD Description

Note: Versions mentioned in the description apply only to the upstream microcode_ctl package and not the microcode_ctl package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Sequence of processor instructions leads to unexpected behavior in the Intel(R) DSA V1.0 for some Intel(R) Xeon(R) Processors may allow an authenticated user to potentially enable denial of service via local access.

CVSS Base Scores

version 3.1