Resource Exhaustion Affecting libxml2-debuginfo package, versions <0:2.9.1-6.amzn2.5.22


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-AMZN2-LIBXML2DEBUGINFO-15245069
  • published6 Feb 2026
  • disclosed15 Jan 2026

Introduced: 15 Jan 2026

CVE-2026-0992  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 libxml2-debuginfo to version 0:2.9.1-6.amzn2.5.22 or higher.
This issue was patched in ALAS2-2026-3144.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2-debuginfo package and not the libxml2-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.

CVSS Base Scores

version 3.1