{
  "threat_severity" : "Moderate",
  "public_date" : "2026-06-02T00:00:00Z",
  "bugzilla" : {
    "description" : "xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: out-of-bounds read/write in GLX ChangeDrawableAttributes",
    "id" : "2485387",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2485387"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
    "status" : "draft"
  },
  "cwe" : "CWE-125",
  "details" : [ "An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default." ],
  "acknowledgement" : "Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server-Xwayland",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "xorg-x11-server",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server-Xwayland",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "impact" : "moderate"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "xorg-x11-server-Xwayland",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "impact" : "moderate"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-50262\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-50262\nhttps://gitlab.freedesktop.org/xorg/xserver/-/commit/6d459e4daf715bea8abdafa8fb130be2f8a1d145\nhttps://lists.x.org/archives/xorg-announce/2026-June/003702.html\nhttps://redhat.atlassian.net/browse/PSIRTSUPT-16950" ],
  "name" : "CVE-2026-50262",
  "csaw" : false
}