Incorrect Bitwise Shift of Integer Affecting kernel-livepatch-4.14.309-231.529 package, versions <0:1.0-0.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-AMZN2-KERNELLIVEPATCH414309231529-5789095
  • published20 Jul 2023
  • disclosed12 Jun 2023

Introduced: 12 Jun 2023

CVE-2023-3161  (opens in a new tab)
CWE-1335  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel-livepatch-4.14.309-231.529 to version 0:1.0-0.amzn2 or higher.
This issue was patched in ALAS2-2023-1987.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4.14.309-231.529 package and not the kernel-livepatch-4.14.309-231.529 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service.

CVSS Scores

version 3.1