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rlsa-2026:55447
Vulnerability from osv_rocky
Published
2026-08-17 18:03
Modified
2026-08-31 18:13
Summary
Important: libXfont2 security update
Details

X.Org X11 libXfont2 runtime library

Security Fix(es):

  • libxfont2: Font Server Client encoding[] Out-Of-Bounds Read/Write (CVE-2026-59679)

  • libxfonts2: libXfont2: Privilege Escalation via Heap Buffer Overflow in Font Server Client (CVE-2026-44950)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "libXfont2",
        "purl": "pkg:rpm/rocky-linux/libXfont2?distro=rocky-linux-9\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:2.0.3-12.el9_8.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:55447"
  },
  "details": "X.Org X11 libXfont2 runtime library\n\nSecurity Fix(es):\n\n* libxfont2: Font Server Client encoding[] Out-Of-Bounds Read/Write (CVE-2026-59679)\n\n* libxfonts2: libXfont2: Privilege Escalation via Heap Buffer Overflow in Font Server Client (CVE-2026-44950)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:55447",
  "modified": "2026-08-31T18:13:35.937918Z",
  "published": "2026-08-17T18:03:57.407277Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:55447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509620"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509622"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:55447"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: libXfont2 security update",
  "upstream": [
    "CVE-2026-44950",
    "CVE-2026-59679"
  ]
}



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