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High ELSA-2026-47103 3 CVEs

Important: libXfont2 security update (Oracle Linux 8)

Published Jul 28, 2026 · Updated Jul 28, 2026

Ecosystem: Oracle Linux

Summary

[2.0.3-2.1]
- CVE fix for: CVE-2026-56001, CVE-2026-56002, CVE-2026-56003
Resolves: https://redhat.atlassian.net/browse/RHEL-191877
Resolves: https://redhat.atlassian.net/browse/RHEL-191928
Resolves: https://redhat.atlassian.net/browse/RHEL-191948

Fixed packages 2

ReleasePackageFixed in
Oracle Linux · 8 libXfont2 0:2.0.3-2.el8_10.1
Oracle Linux · 8 libXfont2-devel 0:2.0.3-2.el8_10.1

Vulnerabilities 3

  • High 8.5
    CVE-2026-56001

    libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow

    A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont

    X.Org libXfont2 libxfont libxfont Debian Ubuntu Azure Linux Alpine
  • High 8.5
    CVE-2026-56002

    libXfont2 PCF Font Parsing Heap Buffer Overflow

    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.

    X.Org libXfont2 libxfont libxfont Debian Ubuntu Azure Linux Alpine
  • High 8.5
    CVE-2026-56003

    libXfont2 computeProps Property Buffer Heap Buffer Overflow

    A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.

    X.Org libXfont2 libxfont libxfont Debian Ubuntu Azure Linux Alpine