Out-of-bounds Write Affecting libXfont2-debugsource package, versions <0:2.0.7-1.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-AMZN2023-LIBXFONT2DEBUGSOURCE-18063459
  • published21 Jul 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 Amazon-Linux:2023 libXfont2-debugsource to version 0:2.0.7-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1967.

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 Amazon-Linux. See How to fix? for Amazon-Linux:2023 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