NULL Pointer Dereference Affecting kernel-tools package, versions <0:4.14.186-146.268.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELTOOLS-1682709
  • published27 Sept 2021
  • disclosed30 Nov 2019

Introduced: 30 Nov 2019

CVE-2019-19462  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-tools to version 0:4.14.186-146.268.amzn2 or higher.
This issue was patched in ALAS2-2020-1465.

NVD Description

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

relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.

CVSS Scores

version 3.1