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OpenAdvisories
Low ALAS2-2026-3294 1 CVE

Low: microcode_ctl security update (Amazon Linux 2)

Published May 11, 2026 · Updated May 13, 2026

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-31648: Improper handling of values in the microcode flow for some Intel(R) Processor Family may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.

Fixed packages 2

ReleasePackageFixed in
Amazon Linux · 2 microcode_ctl 2:2.1-47.amzn2.4.27
Amazon Linux · 2 microcode_ctl-debuginfo 2:2.1-47.amzn2.4.27

Vulnerabilities 1

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2025-31648.html