Heap-based Buffer Overflow Affecting libXfont2-debugsource package, versions <0:2.0.6-5.el10_2.1


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-ROCKY10-LIBXFONT2DEBUGSOURCE-18425808
  • published30 Jul 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

NewCVE-2026-56002  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 libXfont2-debugsource to version 0:2.0.6-5.el10_2.1 or higher.
This issue was patched in RLSA-2026:47079.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libXfont2-debugsource package and not the libXfont2-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8  allows attackers authenticated as X client to execute code within the X server.

CVSS Base Scores

version 3.1