CVE-2020-10768 Affecting kernel-debuginfo package, versions <0:4.14.186-110.268.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNELDEBUGINFO-1722746
  • published27 Sept 2021
  • disclosed16 Sept 2020

Introduced: 16 Sep 2020

CVE-2020-10768  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-debuginfo to version 0:4.14.186-110.268.amzn1 or higher.
This issue was patched in ALAS-2020-1401.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo 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 before 5.8-rc1 in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality.

CVSS Scores

version 3.1