{
  "cveId": "CVE-2026-56002",
  "url": "https://patchblox.com/security/cve/CVE-2026-56002",
  "summary": "CVE-2026-56002 is fixed in 6 products on 1 platform, first by libxfont2 1:2.0.6-2ubuntu0.2, released July 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libXfont2 PCF Font Parsing Heap Buffer Overflow",
  "description": "A heap bufferflow in pcfReadFont() due to missing glyph bounds checking\u00A0in libXfont2 before 2.0.8\u00A0 allows attackers authenticated as X client to execute code within the X server.",
  "published": "2026-07-08T00:00:00Z",
  "severity": "Important",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cwe": "Heap-based Buffer Overflow",
  "epss": 0.00428,
  "epssPercentile": 0.37264,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56002",
  "fixes": [
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "RHEL 10",
      "fixedVersion": "2.0.6-5.el10_0.1",
      "fix": "RHSA-2026:51061",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-51061",
      "released": "2026-07-31T14:20:33Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "RHEL 8",
      "fixedVersion": "0:2.0.3-2.el8_10.1",
      "fix": "RHSA-2026:47103",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-47103",
      "released": "2026-07-31T14:18:54Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "RHEL 9",
      "fixedVersion": "0:2.0.3-12.el9_8.1",
      "fix": "RHSA-2026:47084",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-47084",
      "released": "2026-08-05T15:07:06Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "almalinux 10",
      "fixedVersion": "2.0.6-5.el10_2.1",
      "fix": "ALSA-2026:47079",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47079",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "almalinux 8",
      "fixedVersion": "2.0.3-2.el8_10.1",
      "fix": "ALSA-2026:47103",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47103",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "almalinux 9",
      "fixedVersion": "2.0.3-12.el9_8.1",
      "fix": "ALSA-2026:47084",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47084",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "amzn 2023",
      "fixedVersion": "2.0.7-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1967",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1967",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "ol 10",
      "fixedVersion": "0:2.0.6-5.el10_2.1",
      "fix": "ELSA-2026-47079",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47079",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "ol 8",
      "fixedVersion": "0:2.0.3-2.el8_10.1",
      "fix": "ELSA-2026-47103",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47103",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "ol 9",
      "fixedVersion": "0:2.0.3-12.el9_8.1",
      "fix": "ELSA-2026-47084",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47084",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.0.7-160000.4.1",
      "fix": "OPENSUSE-SU-2026:21284-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21284-1",
      "released": "2026-07-10T08:42:03Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "rocky 10",
      "fixedVersion": "0:2.0.6-5.el10_2.1",
      "fix": "RLSA-2026:47079",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-47079",
      "released": "2026-07-29T18:06:20Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "rocky 8",
      "fixedVersion": "0:2.0.3-2.el8_10.1",
      "fix": "RLSA-2026:47103",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-47103",
      "released": "2026-07-29T06:01:13Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "rocky 9",
      "fixedVersion": "0:2.0.3-12.el9_8.1",
      "fix": "RLSA-2026:47084",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-47084",
      "released": "2026-08-03T12:03:50Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "sles 15.6",
      "fixedVersion": "2.0.3-150000.3.3.1",
      "fix": "SUSE-SU-2026:2794-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2794-1",
      "released": "2026-07-08T08:08:20Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "sles 15.7",
      "fixedVersion": "2.0.3-150000.3.3.1",
      "fix": "SUSE-SU-2026:2794-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2794-1",
      "released": "2026-07-08T08:08:20Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2",
      "release": "sles 16.0",
      "fixedVersion": "2.0.7-160000.4.1",
      "fix": "SUSE-SU-2026:22614-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22614-1",
      "released": "2026-07-10T08:41:15Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.0.7-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1967",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1967",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.0.7-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1967",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1967",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:2.0.3-2.el8_10.1",
      "fix": "RHSA-2026:47103",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-47103",
      "released": "2026-07-31T14:18:54Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "RHEL 9",
      "fixedVersion": "0:2.0.3-12.el9_8.1",
      "fix": "RHSA-2026:47084",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-47084",
      "released": "2026-08-05T15:07:06Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "almalinux 10",
      "fixedVersion": "2.0.6-5.el10_2.1",
      "fix": "ALSA-2026:47079",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47079",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "almalinux 8",
      "fixedVersion": "2.0.3-2.el8_10.1",
      "fix": "ALSA-2026:47103",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47103",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "almalinux 9",
      "fixedVersion": "2.0.3-12.el9_8.1",
      "fix": "ALSA-2026:47084",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-47084",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.0.7-1.amzn2023.0.2",
      "fix": "ALAS2023-2026-1967",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1967",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "ol 10",
      "fixedVersion": "0:2.0.6-5.el10_2.1",
      "fix": "ELSA-2026-47079",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47079",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "ol 8",
      "fixedVersion": "0:2.0.3-2.el8_10.1",
      "fix": "ELSA-2026-47103",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47103",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libXfont2-devel",
      "release": "ol 9",
      "fixedVersion": "0:2.0.3-12.el9_8.1",
      "fix": "ELSA-2026-47084",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-47084",
      "released": "2026-07-28T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libxfont",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "1:2.0.6-1\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-56002",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56002",
      "released": "2026-07-13T16:20:43Z"
    },
    {
      "platform": "linux",
      "product": "libxfont",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:2.0.6-1\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-56002",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56002",
      "released": "2026-07-13T16:20:43Z"
    },
    {
      "platform": "linux",
      "product": "libxfont",
      "release": "Debian 14",
      "fixedVersion": "1:2.0.8-1",
      "fix": "DEBIAN-CVE-2026-56002",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56002",
      "released": "2026-07-13T16:20:43Z"
    },
    {
      "platform": "linux",
      "product": "libxfont2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:2.0.3-1ubuntu0.1~esm2",
      "fix": "libxfont2 1:2.0.3-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libxfont2-1-2.0.3-1ubuntu0.1-esm2",
      "released": "2026-07-23T13:24:24Z"
    },
    {
      "platform": "linux",
      "product": "libxfont2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:2.0.3-1ubuntu0.20.04.1~esm2",
      "fix": "libxfont2 1:2.0.3-1ubuntu0.20.04.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxfont2-1-2.0.3-1ubuntu0.20.04.1-esm2",
      "released": "2026-07-23T13:24:26Z"
    },
    {
      "platform": "linux",
      "product": "libxfont2",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1:2.0.5-1ubuntu0.2",
      "fix": "libxfont2 1:2.0.5-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libxfont2-1-2.0.5-1ubuntu0.2",
      "released": "2026-07-23T13:24:32Z"
    },
    {
      "platform": "linux",
      "product": "libxfont2",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1:2.0.6-1\u002Bdeb13u1build0.24.04.2",
      "fix": "libxfont2 1:2.0.6-1\u002Bdeb13u1build0.24.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libxfont2-1-2.0.6-1-deb13u1build0.24.04.2",
      "released": "2026-07-23T13:24:32Z"
    },
    {
      "platform": "linux",
      "product": "libxfont2",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "1:2.0.6-2ubuntu0.2",
      "fix": "libxfont2 1:2.0.6-2ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libxfont2-1-2.0.6-2ubuntu0.2",
      "released": "2026-07-08T03:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}