{
  "cveId": "CVE-2026-56000",
  "url": "https://patchblox.com/security/cve/CVE-2026-56000",
  "summary": "CVE-2026-56000 is fixed in 7 products on 1 platform, first by SUSE-SU-2026:2786-1, released July 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()",
  "description": "Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to\u00A0CommonMakeCurrent() pointing into potentially reallocated memory.",
  "published": "2026-07-08T00:00:00Z",
  "severity": "Moderate",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cwe": "Use After Free",
  "epss": 0.00308,
  "epssPercentile": 0.23787,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56000",
  "fixes": [
    {
      "platform": "linux",
      "product": "xorg-server",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2:21.1.16-1.3\u002Bdeb13u4",
      "fix": "DEBIAN-CVE-2026-56000",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56000",
      "released": "2026-07-08T09:16:29Z"
    },
    {
      "platform": "linux",
      "product": "xorg-server",
      "release": "Debian 14",
      "fixedVersion": "2:21.1.24-1",
      "fix": "DEBIAN-CVE-2026-56000",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56000",
      "released": "2026-07-08T09:16:29Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "21.1.15-160000.6.1",
      "fix": "OPENSUSE-SU-2026:21273-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21273-1",
      "released": "2026-07-08T17:58:06Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server",
      "release": "sles 15.6",
      "fixedVersion": "21.1.11-150600.5.31.1",
      "fix": "SUSE-SU-2026:2786-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2786-1",
      "released": "2026-07-08T07:16:50Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server",
      "release": "sles 15.7",
      "fixedVersion": "21.1.15-150700.5.22.1",
      "fix": "SUSE-SU-2026:2788-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2788-1",
      "released": "2026-07-08T07:22:14Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "RHEL 10",
      "fixedVersion": "24.1.5-6.el10_0.2",
      "fix": "RHSA-2026:50100",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-50100",
      "released": "2026-07-13T16:22:40Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "RHEL 9",
      "fixedVersion": "0:24.1.9-4.el9_8.3",
      "fix": "RHSA-2026:38490",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-38490",
      "released": "2026-07-13T16:22:40Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "almalinux 10",
      "fixedVersion": "24.1.9-4.el10_2.3",
      "fix": "ALSA-2026:38489",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-38489",
      "released": "2026-07-13T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "almalinux 9",
      "fixedVersion": "24.1.9-4.el9_8.3",
      "fix": "ALSA-2026:38490",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-38490",
      "released": "2026-07-13T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "amzn 2023",
      "fixedVersion": "24.1.3-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-1944",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1944",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "ol 10",
      "fixedVersion": "0:24.1.9-4.el10_2.3",
      "fix": "ELSA-2026-38489",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-38489",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "ol 9",
      "fixedVersion": "0:24.1.9-4.el9_8.3",
      "fix": "ELSA-2026-38490",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-38490",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "rocky 10",
      "fixedVersion": "0:24.1.9-4.el10_2.3",
      "fix": "RLSA-2026:38489",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-38489",
      "released": "2026-07-14T12:05:31Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland",
      "release": "rocky 9",
      "fixedVersion": "0:24.1.9-4.el9_8.3",
      "fix": "RLSA-2026:38490",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-38490",
      "released": "2026-07-14T12:03:23Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "24.1.3-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-1944",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1944",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "24.1.3-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-1944",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1944",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "RHEL 9",
      "fixedVersion": "0:24.1.9-4.el9_8.3",
      "fix": "RHSA-2026:38490",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-38490",
      "released": "2026-07-13T16:22:40Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "almalinux 10",
      "fixedVersion": "24.1.9-4.el10_2.3",
      "fix": "ALSA-2026:38489",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-38489",
      "released": "2026-07-13T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "almalinux 9",
      "fixedVersion": "24.1.9-4.el9_8.3",
      "fix": "ALSA-2026:38490",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-38490",
      "released": "2026-07-13T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "amzn 2023",
      "fixedVersion": "24.1.3-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-1944",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1944",
      "released": "2026-07-20T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "ol 10",
      "fixedVersion": "0:24.1.9-4.el10_2.3",
      "fix": "ELSA-2026-38489",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-38489",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server-Xwayland-devel",
      "release": "ol 9",
      "fixedVersion": "0:24.1.9-4.el9_8.3",
      "fix": "ELSA-2026-38490",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-38490",
      "released": "2026-09-01T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "xwayland",
      "release": "Debian 14",
      "fixedVersion": "2:24.1.13-1",
      "fix": "DEBIAN-CVE-2026-56000",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-56000",
      "released": "2026-07-08T09:16:29Z"
    },
    {
      "platform": "linux",
      "product": "xwayland",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "24.1.6-160000.6.1",
      "fix": "OPENSUSE-SU-2026:21283-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21283-1",
      "released": "2026-07-10T08:45:38Z"
    },
    {
      "platform": "linux",
      "product": "xwayland",
      "release": "sles 15.7",
      "fixedVersion": "24.1.5-150700.3.22.1",
      "fix": "SUSE-SU-2026:2787-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2787-1",
      "released": "2026-07-08T07:19:18Z"
    },
    {
      "platform": "linux",
      "product": "xwayland",
      "release": "sles 16.0",
      "fixedVersion": "24.1.6-160000.6.1",
      "fix": "SUSE-SU-2026:22617-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22617-1",
      "released": "2026-07-10T08:44:49Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}