Integer Overflow or Wraparound Affecting expat package, versions <0:2.2.10-1.el8_6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.99% (90th percentile)

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  • Snyk IDSNYK-RHEL8-EXPAT-14258749
  • published9 Dec 2025
  • disclosed26 Jan 2022

Introduced: 26 Jan 2022

CVE-2022-23990  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade RHEL:8 expat to version 0:2.2.10-1.el8_6 or higher.
This issue was patched in RHSA-2025:22842.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.

CVSS Base Scores

version 3.1