RHSA-2026:51063HighCVSS 7.3

Red Hat Security Advisory: libXfont2 security update

Published
August 6, 2026
Last Modified
August 6, 2026

🔗 CVE IDs covered (3)

CVE-2026-56001 →CVE-2026-56002 →CVE-2026-56003 →

📋 Description

CVE-2026-56001 — libXfont2: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow CVE-2026-56002 — libXfont2: PCF Font Parsing Heap Buffer Overflow CVE-2026-56003 — libXfont2: computeProps Property Buffer Heap Buffer Overflow

🎯 Affected products31

  • Red Hat Enterprise Linux Server (v. 7 ELS)
  • Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.src as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-0:2.0.3-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.s390 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • libXfont2-debuginfo-0:2.0.3-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.ppc as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.s390 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • libXfont2-devel-0:2.0.3-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • +1 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

🔗 References (6)