{
  "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" : "Der Kernel stellt den Kern des Linux Betriebssystems dar.\r\nRed Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution.\r\nUbuntu Linux ist die Linux Distribution des Herstellers Canonical.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel, Red Hat Enterprise Linux und Ubuntu Linux ausnutzen, um seine Privilegien zu erhöhen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- Appliance\n- Linux",
      "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-2022-0965 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0965.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2022-0965 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0965"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/security/cve/CVE-2021-33909"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2722"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2723"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2714"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2715"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2716"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2727"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2728"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2729"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2730"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2731"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2732"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2733"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2734"
    }, {
      "category" : "external",
      "summary" : "RedHat Security Advisory vom 2021-07-20",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2735"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Advisory vom 2021-07-20",
      "url" : "https://ubuntu.com/security/notices/USN-5014-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Advisory vom 2021-07-20",
      "url" : "https://ubuntu.com/security/notices/USN-5015-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Advisory vom 2021-07-20",
      "url" : "https://ubuntu.com/security/notices/USN-5016-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Advisory vom 2021-07-20",
      "url" : "https://ubuntu.com/security/notices/USN-5017-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Advisory vom 2021-07-20",
      "url" : "https://ubuntu.com/security/notices/USN-5018-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2427-1 vom 2021-07-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009190.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2021-1524 vom 2021-07-22",
      "url" : "https://alas.aws.amazon.com/ALAS-2021-1524.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS-2021-1691 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALAS-2021-1691.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASLIVEPATCH-2021-059 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-059.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASLIVEPATCH-2021-055 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-055.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASLIVEPATCH-2021-056 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-056.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASLIVEPATCH-2021-057 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-057.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASLIVEPATCH-2021-058 vom 2021-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-058.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-2725 vom 2021-07-22",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-2725.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2438-1 vom 2021-07-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009194.html"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202107-49 vom 2021-07-22",
      "url" : "https://security.archlinux.org/ASA-202107-49"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202107-51 vom 2021-07-22",
      "url" : "https://security.archlinux.org/ASA-202107-51"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202107-50 vom 2021-07-22",
      "url" : "https://security.archlinux.org/ASA-202107-50"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2421-1 vom 2021-07-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009183.html"
    }, {
      "category" : "external",
      "summary" : "Arch Linux Security Advisory ASA-202107-48 vom 2021-07-22",
      "url" : "https://security.archlinux.org/ASA-202107-48"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2737 vom 2021-07-21",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2737"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2422-1 vom 2021-07-21",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009191.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2736 vom 2021-07-22",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2736"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9368 vom 2021-07-22",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9368.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9369 vom 2021-07-22",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9369.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9370 vom 2021-07-22",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9370.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9371 vom 2021-07-22",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9371.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9372 vom 2021-07-23",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9372.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2451-1 vom 2021-07-22",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009203.html"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2021-0023 vom 2021-07-22",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2021-July/001024.html"
    }, {
      "category" : "external",
      "summary" : "IGEL Security Notice ISN-2021-04 vom 2021-07-23",
      "url" : "https://kb.igel.com/securitysafety/en/isn-2021-04-igel-os-kernel-privilege-escalation-47715888.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:2763 vom 2021-07-26",
      "url" : "https://access.redhat.com/errata/RHSA-2021:2763"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9374 vom 2021-07-27",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9374.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice LSN-0079-1 vom 2021-07-26",
      "url" : "https://ubuntu.com/security/notices/LSN-0079-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2487-1 vom 2021-07-27",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009222.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2538-1 vom 2021-07-27",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009221.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2542-1 vom 2021-07-28",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009226.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2559-1 vom 2021-07-29",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009233.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2560-1 vom 2021-07-29",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009230.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2577-1 vom 2021-07-30",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-July/009234.html"
    }, {
      "category" : "external",
      "summary" : "F5 Security Advisory K75133288 vom 2021-08-03",
      "url" : "https://support.f5.com/csp/article/K75133288"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2584-1 vom 2021-08-02",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009239.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9395 vom 2021-08-04",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9395.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3016 vom 2021-08-06",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3016"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2021-0025 vom 2021-08-09",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2021-August/001026.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9404 vom 2021-08-10",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9404.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9406 vom 2021-08-10",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9406.html"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2021-0025 vom 2021-08-09",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2021-August/001027.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2643-1 vom 2021-08-10",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009279.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3119 vom 2021-08-10",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3119"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9407 vom 2021-08-11",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9407.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-3057 vom 2021-08-12",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-3057.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-9410 vom 2021-08-11",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-9410.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:2678-1 vom 2021-08-12",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-August/009288.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:3259 vom 2021-08-25",
      "url" : "https://access.redhat.com/errata/RHSA-2021:3259"
    }, {
      "category" : "external",
      "summary" : "AVAYA Security Advisory ASA-2021-100 vom 2021-08-25",
      "url" : "https://downloads.avaya.com/css/P8/documents/101077234"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice LSN-0081-1 vom 2021-09-13",
      "url" : "https://ubuntu.com/security/notices/LSN-0081-1"
    }, {
      "category" : "external",
      "summary" : "ExtremeNetworks Vulnerability Notice VN-2021-462 vom 2021-09-21",
      "url" : "https://extremeportal.force.com/ExtrArticleDetail?an=000099120"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:4356 vom 2021-11-09",
      "url" : "https://access.redhat.com/errata/RHSA-2021:4356"
    }, {
      "category" : "external",
      "summary" : "Meinberg Security Advisory MBGSA-2021.03 vom 2021-11-15",
      "url" : "https://www.meinberg.de/german/news/meinberg-security-advisory-mbgsa-2021-03-meinberg-lantime-firmware-v7-04-008-und-v6-24-029.htm"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2021:3876-1 vom 2021-12-02",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2021-December/009810.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice LSN-0083-1 vom 2022-01-06",
      "url" : "https://ubuntu.com/security/notices/LSN-0083-1"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.4-2022-005 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-005.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-003 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-003.html"
    }, {
      "category" : "external",
      "summary" : "SonicWall Security Advisory SNWLID-2022-0015 vom 2022-08-09",
      "url" : "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2022-9999 vom 2022-11-16",
      "url" : "http://linux.oracle.com/errata/ELSA-2022-9999.html"
    }, {
      "category" : "external",
      "summary" : "NetApp Security Advisory NTAP-20210819-0004 vom 2026-03-11",
      "url" : "https://security.netapp.com/advisory/NTAP-20210819-0004"
    } ],
    "source_lang" : "en-US",
    "title" : "Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation",
    "tracking" : {
      "current_release_date" : "2026-03-11T23:00:00.000+00:00",
      "generator" : {
        "date" : "2026-03-12T10:16:39.740+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.5.0"
        }
      },
      "id" : "WID-SEC-W-2022-0965",
      "initial_release_date" : "2021-07-20T22:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2021-07-20T22:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2021-07-21T22:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von SUSE, Amazon, Oracle Linux, Arch Linux und Red Hat aufgenommen"
      }, {
        "date" : "2021-07-22T22:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von Red Hat, Oracle Linux, SUSE und ORACLE aufgenommen"
      }, {
        "date" : "2021-07-26T22:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Red Hat, Oracle Linux und Ubuntu aufgenommen"
      }, {
        "date" : "2021-07-27T22:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2021-07-28T22:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2021-07-29T22:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2021-08-01T22:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2021-08-02T22:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von F5 und SUSE aufgenommen"
      }, {
        "date" : "2021-08-03T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2021-08-05T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-08-09T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von ORACLE und Oracle Linux aufgenommen"
      }, {
        "date" : "2021-08-10T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von SUSE und Red Hat aufgenommen"
      }, {
        "date" : "2021-08-11T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2021-08-12T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2021-08-24T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2021-08-26T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von AVAYA aufgenommen"
      }, {
        "date" : "2021-09-13T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2021-09-21T22:00:00.000+00:00",
        "number" : "19",
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        "summary" : "Neue Updates von Amazon aufgenommen"
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        "date" : "2022-11-16T23:00:00.000+00:00",
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        "date" : "2026-03-11T23:00:00.000+00:00",
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    "release_date" : "2021-07-20T22:00:00.000+00:00",
    "title" : "CVE-2021-33909"
  } ]
}