{
  "document" : {
    "aggregate_severity" : {
      "text" : "hoch"
    },
    "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.",
      "title" : "Produktbeschreibung"
    }, {
      "category" : "summary",
      "text" : "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um seine Privilegien zu erweitern oder einen Denial of Service Zustand herbeizuführen.",
      "title" : "Angriff"
    }, {
      "category" : "general",
      "text" : "- 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-2022-0317 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0317.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2022-0317 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2022-0317"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASMICROVM-KERNEL-4.14-2023-001 vom 2023-09-27",
      "url" : "https://alas.aws.amazon.com/AL2/ALASMICROVM-KERNEL-4.14-2023-001.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-6221-1 vom 2023-07-12",
      "url" : "https://ubuntu.com/security/notices/USN-6221-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1669-1 vom 2022-05-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011018.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1676-1 vom 2022-05-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011024.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1687-1 vom 2022-05-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011033.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1686-1 vom 2022-05-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011035.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1668-1 vom 2022-05-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/011019.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2083-1 vom 2022-06-15",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011291.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2077-1 vom 2022-06-15",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011285.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2082-1 vom 2022-06-15",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011287.html"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:5227 vom 2021-12-21",
      "url" : "https://access.redhat.com/errata/RHSA-2021:5227"
    }, {
      "category" : "external",
      "summary" : "Red Hat Bugzilla - Bug 2013242 vom 2021-12-21",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2013242"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2021:5241 vom 2021-12-21",
      "url" : "https://access.redhat.com/errata/RHSA-2021:5241"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2021-5227 vom 2021-12-21",
      "url" : "http://linux.oracle.com/errata/ELSA-2021-5227.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2843",
      "url" : "https://www.debian.org/lts/security/2021/dla-2843"
    }, {
      "category" : "external",
      "summary" : "Arch Linux CVE-2021-20321",
      "url" : "https://security.archlinux.org/CVE-2021-20321"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5210-1 vom 2022-01-06",
      "url" : "https://ubuntu.com/security/notices/USN-5210-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5208-1 vom 2022-01-06",
      "url" : "https://ubuntu.com/security/notices/USN-5208-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5209-1 vom 2022-01-06",
      "url" : "https://ubuntu.com/security/notices/USN-5209-1"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0043 vom 2022-01-10",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0043"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0042 vom 2022-01-10",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0042"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0044 vom 2022-01-10",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0044"
    }, {
      "category" : "external",
      "summary" : "Red Hat Security Advisory RHSA-2022:0047 vom 2022-01-10",
      "url" : "https://access.redhat.com/errata/RHSA-2022:0047"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5218-1 vom 2022-01-11",
      "url" : "https://ubuntu.com/security/notices/USN-5218-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5210-2 vom 2022-01-12",
      "url" : "https://ubuntu.com/security/notices/USN-5210-2"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-007 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-007.html"
    }, {
      "category" : "external",
      "summary" : "Oracle Linux Security Advisory ELSA-2022-9088 vom 2022-02-01",
      "url" : "https://linux.oracle.com/errata/ELSA-2022-9088.html"
    }, {
      "category" : "external",
      "summary" : "ORACLE OVMSA-2022-0007 vom 2022-02-17",
      "url" : "https://oss.oracle.com/pipermail/oraclevm-errata/2022-February/001048.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DLA-2941 vom 2022-03-09",
      "url" : "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
    }, {
      "category" : "external",
      "summary" : "Debian Security Advisory DSA-5096 vom 2022-03-09",
      "url" : "https://lists.debian.org/debian-security-announce/2022/msg00063.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2111-1 vom 2022-06-17",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011310.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2103-1 vom 2022-06-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011299.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:2104-1 vom 2022-06-16",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-June/011302.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:1651-1 vom 2022-05-12",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-May/010994.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-029 vom 2022-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-029.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-027 vom 2022-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-027.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2022-031 vom 2022-07-21",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-031.html"
    } ],
    "source_lang" : "en-US",
    "title" : "Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation",
    "tracking" : {
      "current_release_date" : "2023-09-27T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T17:28:10.514+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2022-0317",
      "initial_release_date" : "2021-12-21T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2021-12-21T23:00:00.000+00:00",
        "number" : "1",
        "summary" : "Initiale Fassung"
      }, {
        "date" : "2022-01-05T23:00:00.000+00:00",
        "number" : "2",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-01-09T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von Red Hat aufgenommen"
      }, {
        "date" : "2022-01-10T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von Red Hat und Ubuntu aufgenommen"
      }, {
        "date" : "2022-01-12T23:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-01-30T23:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-02-01T23:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Oracle Linux aufgenommen"
      }, {
        "date" : "2022-02-16T23:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von ORACLE aufgenommen"
      }, {
        "date" : "2022-03-09T23:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Debian aufgenommen"
      }, {
        "date" : "2022-05-12T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-05-16T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-06-14T22:00:00.000+00:00",
        "number" : "12",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-06-16T22:00:00.000+00:00",
        "number" : "13",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-06-19T22:00:00.000+00:00",
        "number" : "14",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-07-20T22:00:00.000+00:00",
        "number" : "15",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-07-21T22:00:00.000+00:00",
        "number" : "16",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2023-07-12T22:00:00.000+00:00",
        "number" : "17",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2023-09-27T22:00:00.000+00:00",
        "number" : "18",
        "summary" : "Neue Updates von Amazon aufgenommen"
      } ],
      "status" : "final",
      "version" : "18"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Amazon Linux 2",
        "product" : {
          "name" : "Amazon Linux 2",
          "product_id" : "398363",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:amazon:linux_2:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Amazon"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Debian Linux",
        "product" : {
          "name" : "Debian Linux",
          "product_id" : "2951",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:debian:debian_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Debian"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Open Source Arch Linux",
        "product" : {
          "name" : "Open Source Arch Linux",
          "product_id" : "T013312",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:archlinux:archlinux:-"
          }
        }
      }, {
        "category" : "product_name",
        "name" : "Open Source Linux Kernel",
        "product" : {
          "name" : "Open Source Linux Kernel",
          "product_id" : "6368",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:linux:linux_kernel:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Open Source"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Oracle Linux",
        "product" : {
          "name" : "Oracle Linux",
          "product_id" : "T004914",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:oracle:linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Oracle"
    }, {
      "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" : "T002207",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:suse:suse_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "SUSE"
    }, {
      "branches" : [ {
        "category" : "product_name",
        "name" : "Ubuntu Linux",
        "product" : {
          "name" : "Ubuntu Linux",
          "product_id" : "T000126",
          "product_identification_helper" : {
            "cpe" : "cpe:/o:canonical:ubuntu_linux:-"
          }
        }
      } ],
      "category" : "vendor",
      "name" : "Ubuntu"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2021-20321",
    "notes" : [ {
      "category" : "description",
      "text" : "Es besteht eine Schwachstelle im Linux Kernel aufgrund einer Race Condition im \"overlayfs\" Dateisystemtreiber. Ein lokaler Angreifer, der auf ein eingehängtes \"overlayfs\"-Dateisystem und das darunter liegende Verzeichnis zugreifen kann, kann dies ausnutzen, um seine Privilegien zu erweitern oder einen Denial of Service Zustand herbeizuführen."
    } ],
    "product_status" : {
      "known_affected" : [ "2951", "T002207", "67646", "6368", "T000126", "T013312", "398363", "T004914" ]
    },
    "release_date" : "2021-12-21T23:00:00.000+00:00",
    "title" : "CVE-2021-20321"
  } ]
}