Sequence of Processor Instructions Leads to Unexpected Behavior Affecting microcode_ctl-debuginfo package, versions <2:2.1-47.amzn2.4.26


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-AMZN2-MICROCODECTLDEBUGINFO-13165786
  • published1 Oct 2025
  • disclosed12 Aug 2025

Introduced: 12 Aug 2025

CVE-2025-22840  (opens in a new tab)
CWE-1281  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 microcode_ctl-debuginfo to version 2:2.1-47.amzn2.4.26 or higher.
This issue was patched in ALAS2-2025-3014.

NVD Description

Note: Versions mentioned in the description apply only to the upstream microcode_ctl-debuginfo package and not the microcode_ctl-debuginfo 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 for some Intel(R) Xeon(R) 6 Scalable processors may allow an authenticated user to potentially enable escalation of privilege via local access

CVSS Base Scores

version 3.1