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


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-AMZN2-GLIBCNSSDEVEL-16340941
  • 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-nss-devel 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-nss-devel package and not the glibc-nss-devel 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