{
  "cveId": "CVE-2023-3138",
  "url": "https://patchblox.com/security/cve/CVE-2023-3138",
  "summary": "CVE-2023-3138 is fixed in 11 products on 1 platform, first by libx11-6 2:1.6.4-3ubuntu0.4\u002Besm1, released June 14, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "libx11: A vulnerability was found in libX11",
  "description": "A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption.",
  "published": "2023-06-14T17:00:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.01656,
  "epssPercentile": 0.76747,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libX11",
      "release": "RHEL 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "RHSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "RHEL 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "RHSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "almalinux 8",
      "fixedVersion": "1.6.8-6.el8",
      "fix": "ALSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "almalinux 9",
      "fixedVersion": "1.7.0-8.el9",
      "fix": "ALSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "ol 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "ELSA-2023-7029",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7029",
      "released": "2023-11-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11",
      "release": "ol 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "ELSA-2023-6497",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-6497",
      "released": "2023-11-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "RHEL 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "RHSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "RHEL 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "RHSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "almalinux 8",
      "fixedVersion": "1.6.8-6.el8",
      "fix": "ALSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "almalinux 9",
      "fixedVersion": "1.7.0-8.el9",
      "fix": "ALSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "ol 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "ELSA-2023-7029",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7029",
      "released": "2023-11-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-common",
      "release": "ol 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "ELSA-2023-6497",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-6497",
      "released": "2023-11-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "RHSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "RHEL 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "RHSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "almalinux 8",
      "fixedVersion": "1.6.8-6.el8",
      "fix": "ALSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "almalinux 9",
      "fixedVersion": "1.7.0-8.el9",
      "fix": "ALSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "ELSA-2023-7029",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7029",
      "released": "2023-11-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-devel",
      "release": "ol 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "ELSA-2023-6497",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-6497",
      "released": "2023-11-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "RHEL 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "RHSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "RHEL 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "RHSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "almalinux 8",
      "fixedVersion": "1.6.8-6.el8",
      "fix": "ALSA-2023:7029",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-7029",
      "released": "2023-11-14T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "almalinux 9",
      "fixedVersion": "1.7.0-8.el9",
      "fix": "ALSA-2023:6497",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-6497",
      "released": "2023-11-07T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "ol 8",
      "fixedVersion": "0:1.6.8-6.el8",
      "fix": "ELSA-2023-7029",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-7029",
      "released": "2023-11-17T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb",
      "release": "ol 9",
      "fixedVersion": "0:1.7.0-8.el9",
      "fix": "ELSA-2023-6497",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-6497",
      "released": "2023-11-11T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libX11-xcb-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.7.2-3.amzn2023.0.3",
      "fix": "ALAS2023-2023-250",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-250",
      "released": "2023-07-17T20:45:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11",
      "release": "Debian 11.6 (bullseye)",
      "fixedVersion": "2:1.7.2-1\u002Bdeb11u1",
      "fix": "DSA-5433-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5433-1",
      "released": "2023-06-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2:1.8.4-2\u002Bdeb12u1",
      "fix": "DSA-5433-1",
      "url": "https://patchblox.com/security/fix/linux/dsa-5433-1",
      "released": "2023-06-21T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2:1.8.6-1",
      "fix": "DEBIAN-CVE-2023-3138",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-3138",
      "released": "2023-06-28T21:15:10Z"
    },
    {
      "platform": "linux",
      "product": "libx11",
      "release": "Debian 14",
      "fixedVersion": "2:1.8.6-1",
      "fix": "DEBIAN-CVE-2023-3138",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-3138",
      "released": "2023-06-28T21:15:10Z"
    },
    {
      "platform": "linux",
      "product": "libx11-6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.4\u002Besm1",
      "fix": "libx11-6 2:1.6.4-3ubuntu0.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-6-2-1.6.4-3ubuntu0.4-esm1",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-6",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.6.9-2ubuntu1.5",
      "fix": "libx11-6 2:1.6.9-2ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libx11-6-2-1.6.9-2ubuntu1.5",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-6",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2:1.7.5-1ubuntu0.2",
      "fix": "libx11-6 2:1.7.5-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libx11-6-2-1.7.5-1ubuntu0.2",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-data",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.4\u002Besm1",
      "fix": "libx11-data 2:1.6.4-3ubuntu0.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-data-2-1.6.4-3ubuntu0.4-esm1",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-data",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.6.9-2ubuntu1.5",
      "fix": "libx11-data 2:1.6.9-2ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libx11-data-2-1.6.9-2ubuntu1.5",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-data",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2:1.7.5-1ubuntu0.2",
      "fix": "libx11-data 2:1.7.5-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libx11-data-2-1.7.5-1ubuntu0.2",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-xcb1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.4\u002Besm1",
      "fix": "libx11-xcb1 2:1.6.4-3ubuntu0.4\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-xcb1-2-1.6.4-3ubuntu0.4-esm1",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-xcb1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:1.6.9-2ubuntu1.5",
      "fix": "libx11-xcb1 2:1.6.9-2ubuntu1.5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libx11-xcb1-2-1.6.9-2ubuntu1.5",
      "released": "2023-06-14T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-xcb1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2:1.7.5-1ubuntu0.2",
      "fix": "libx11-xcb1 2:1.7.5-1ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libx11-xcb1-2-1.7.5-1ubuntu0.2",
      "released": "2023-06-14T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}