Incorrect Bitwise Shift of Integer Affecting kernel-libbpf-static package, versions <0:6.1.12-17.42.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELLIBBPFSTATIC-5788398
  • 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)
First added by Snyk

How to fix?

Upgrade Amazon-Linux:2023 kernel-libbpf-static to version 0:6.1.12-17.42.amzn2023 or higher.
This issue was patched in ALAS2023-2023-132.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-libbpf-static package and not the kernel-libbpf-static package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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