Reachable Assertion Affecting glibc-locale-source package, versions <0:2.26-64.amzn2.0.6


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.07% (20th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-GLIBCLOCALESOURCE-16341165
  • published2 May 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

CVE-2026-4046  (opens in a new tab)
CWE-617  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 glibc-locale-source to version 0:2.26-64.amzn2.0.6 or higher.
This issue was patched in ALAS2-2026-3272.

NVD Description

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

The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application.

This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.

CVSS Base Scores

version 3.1