Race Condition Affecting kernel-livepatch-4.14.209-160.335 package, versions <0:1.0-0.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.03% (59th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414209160335-1692050
  • published27 Sept 2021
  • disclosed26 May 2021

Introduced: 26 May 2021

CVE-2020-25668  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-livepatch-4.14.209-160.335 to version 0:1.0-0.amzn2 or higher.
This issue was patched in ALAS2-2020-1566.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4.14.209-160.335 package and not the kernel-livepatch-4.14.209-160.335 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.

CVSS Base Scores

version 3.1