Integer Overflow or Wraparound Affecting gawk-all-langpacks package, versions <0:5.1.0-3.amzn2023.0.4


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-GAWKALLLANGPACKS-18532051
  • published5 Aug 2026
  • disclosed13 Jul 2026

Introduced: 13 Jul 2026

CVE-2026-40468  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 gawk-all-langpacks to version 0:5.1.0-3.amzn2023.0.4 or higher.
This issue was patched in ALAS2023-2026-2035.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gawk-all-langpacks package and not the gawk-all-langpacks package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.

CVSS Base Scores

version 3.1