Out-of-bounds Write Affecting libXfont2 package, versions <0:2.0.3-12.el9_6.1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-RHEL9-LIBXFONT2-18579729
  • published7 Aug 2026
  • disclosed8 Jul 2026

Introduced: 8 Jul 2026

CVE-2026-56002  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:9 libXfont2 to version 0:2.0.3-12.el9_6.1 or higher.
This issue was patched in RHSA-2026:51059.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libXfont2 package and not the libXfont2 package as distributed by RHEL. See How to fix? for RHEL:9 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