Information Exposure Affecting amd64-microcode package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-UBUNTU2004-AMD64MICROCODE-1759698
  • published20 Oct 2021
  • disclosed13 Oct 2021

Introduced: 13 Oct 2021

CVE-2021-26318  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 amd64-microcode.

NVD Description

Note: Versions mentioned in the description apply only to the upstream amd64-microcode package and not the amd64-microcode package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

A timing and power-based side channel attack leveraging the x86 PREFETCH instructions on some AMD CPUs could potentially result in leaked kernel address space information.

CVSS Scores

version 3.1