{
  "document" : {
    "aggregate_severity" : {
      "text" : "mittel"
    },
    "category" : "csaf_base",
    "csaf_version" : "2.0",
    "distribution" : {
      "tlp" : {
        "label" : "WHITE",
        "url" : "https://www.first.org/tlp/"
      }
    },
    "lang" : "de-DE",
    "notes" : [ {
      "category" : "legal_disclaimer",
      "text" : "Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen."
    }, {
      "category" : "description",
      "text" : "Das X Window System dient der Erzeugung grafischer Oberflächen auf Unix Systemen.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in X.Org X11 ausnutzen, um seine Privilegien zu erhöhen, und um einen Denial of Service Angriff durchzuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Linux\n- UNIX",
      "title" : "Betroffene Betriebssysteme"
    } ],
    "publisher" : {
      "category" : "other",
      "contact_details" : "csaf-provider@cert-bund.de",
      "name" : "Bundesamt für Sicherheit in der Informationstechnik",
      "namespace" : "https://www.bsi.bund.de"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "WID-SEC-W-2026-2658 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2658.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2026-2658 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2658"
    }, {
      "category" : "external",
      "summary" : "X.Org Security Advisory vom 2026-08-04",
      "url" : "https://seclists.org/oss-sec/2026/q3/436"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:3500-1 vom 2026-08-05",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028147.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:3499-1 vom 2026-08-05",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028148.html"
    }, {
      "category" : "external",
      "summary" : "openSUSE Security Update OPENSUSE-SU-2026:11463-1 vom 2026-08-08",
      "url" : "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PTGMTNHE2PKU34GA4TVT54ZYUWSQDO6P/"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:55447 vom 2026-08-17",
      "url" : "https://access.redhat.com/errata/RHSA-2026:55447"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:23151-1 vom 2026-08-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028300.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2026:23128-1 vom 2026-08-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2026-August/028318.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:55448 vom 2026-08-17",
      "url" : "https://access.redhat.com/errata/RHSA-2026:55448"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2026:55446 vom 2026-08-17",
      "url" : "https://access.redhat.com/errata/RHSA-2026:55446"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-55447 vom 2026-08-17",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-55447.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-55448 vom 2026-08-17",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-55448.html"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:55446 vom 2026-08-17",
      "url" : "https://errata.build.resf.org/RLSA-2026:55446"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:55447 vom 2026-08-17",
      "url" : "https://errata.build.resf.org/RLSA-2026:55447"
    }, {
      "category" : "external",
      "summary" : "Rocky Linux Security Advisory RLSA-2026:55448 vom 2026-08-17",
      "url" : "https://errata.build.resf.org/RLSA-2026:55448"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2026-55446 vom 2026-08-19",
      "url" : "https://linux.oracle.com/errata/ELSA-2026-55446.html"
    } ],
    "source_lang" : "en-US",
    "title" : "X.Org X11 (libXfont2): Mehrere Schwachstellen ermöglichen Privilegieneskalation und Denial of Service",
    "tracking" : {
      "current_release_date" : "2026-08-19T22:00:00.000+00:00",
      "generator" : {
        "date" : "2026-08-20T09:58:43.032+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.6.0"
        }
      },
      "id" : "WID-SEC-W-2026-2658",
      "initial_release_date" : "2026-08-04T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2026-08-04T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2026-08-05T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2026-08-09T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von openSUSE aufgenommen"
      }, {
        "date" : "2026-08-16T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Red Hat und SUSE aufgenommen"
      }, {
        "date" : "2026-08-17T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von Oracle Linux und Rocky Enterprise Software Foundation aufgenommen"
      }, {
        "date" : "2026-08-19T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      } ],
      "status" : "final",
      "version" : "6"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_version_range",
          "name" : "libXfont2 <2.0.9",
          "product" : {
            "name" : "Open Source X.Org X11 libXfont2 <2.0.9",
            "product_id" : "T057547"
          }
        }, {
          "category" : "product_version",
          "name" : "libXfont2 2.0.9",
          "product" : {
            "name" : "Open Source X.Org X11 libXfont2 2.0.9",
            "product_id" : "T057547-fixed",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:x:x.org_x11:libxfont2__2.0.9"
            }
          }
        } ],
        "category" : "product_name",
        "name" : "X.Org X11"
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Oracle Linux",
        "product" : {
          "name" : "Oracle Linux",
          "product_id" : "T056236",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:oracle:linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Oracle"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "RESF Rocky Linux",
        "product" : {
          "name" : "RESF Rocky Linux",
          "product_id" : "T054581",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:resf:rocky_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "RESF"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Red Hat Enterprise Linux",
        "product" : {
          "name" : "Red Hat Enterprise Linux",
          "product_id" : "67646",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:redhat:enterprise_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "SUSE Linux",
        "product" : {
          "name" : "SUSE Linux",
          "product_id" : "T054646",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:suse_linux:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "SUSE openSUSE",
        "product" : {
          "name" : "SUSE openSUSE",
          "product_id" : "T055946",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:opensuse:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "SUSE"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-44950",
    "product_status" : {
      "known_affected" : [ "T056236", "T057547", "T054581", "67646", "T055946", "T054646" ]
    },
    "release_date" : "2026-08-04T22:00:00.000+00:00",
    "title" : "CVE-2026-44950"
  }, {
    "cve" : "CVE-2026-59679",
    "product_status" : {
      "known_affected" : [ "T056236", "T057547", "T054581", "67646", "T055946", "T054646" ]
    },
    "release_date" : "2026-08-04T22:00:00.000+00:00",
    "title" : "CVE-2026-59679"
  } ]
}