Heap-based Buffer Overflow Affecting libxml2-debugsource package, versions <0:2.9.13-14.el9_8.5


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-ROCKY9-LIBXML2DEBUGSOURCE-20151293
  • published26 Sept 2026
  • disclosed5 Sept 2026

Introduced: 5 Sep 2026

CVE-2026-86142  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 libxml2-debugsource to version 0:2.9.13-14.el9_8.5 or higher.
This issue was patched in RLSA-2026:71585.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2-debugsource package and not the libxml2-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

CVSS Base Scores

version 3.1