Release of Invalid Pointer or Reference 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
0.33% (27th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414209160335-1691889
  • published27 Sept 2021
  • disclosed19 Nov 2020

Introduced: 19 Nov 2020

CVE-2020-28941  (opens in a new tab)
CWE-763  (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.

An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.

CVSS Base Scores

version 3.1