Incomplete Cleanup Affecting microcode_ctl package, versions <2:2.1-47.40.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-AMZN201803-MICROCODECTL-2945330
  • published8 Jul 2022
  • disclosed15 Jun 2022

Introduced: 15 Jun 2022

CVE-2022-21166  (opens in a new tab)
CWE-459  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 microcode_ctl to version 2:2.1-47.40.amzn1 or higher.
This issue was patched in ALAS-2022-1606.

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:2018.03 relevant fixed versions and status.

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

References

CVSS Scores

version 3.1