Integer Overflow or Wraparound Affecting libxml2-devel package, versions <0:2.9.7-21.el8_10.9


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-ROCKY8-LIBXML2DEVEL-20158030
  • published27 Sept 2026
  • disclosed5 Sept 2026

Introduced: 5 Sep 2026

NewCVE-2026-86138  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libxml2-devel to version 0:2.9.7-21.el8_10.9 or higher.
This issue was patched in RLSA-2026:71641.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2-devel package and not the libxml2-devel package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.

CVSS Base Scores

version 3.1