Use After Free Affecting kernel package, versions <0:4.14.209-117.337.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1725333
  • published27 Sept 2021
  • disclosed3 Dec 2020

Introduced: 3 Dec 2020

CVE-2020-14351  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:4.14.209-117.337.amzn1 or higher.
This issue was patched in ALAS-2021-1461.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1