{
  "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 erhöhen.",
      "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-2023-2557 - CSAF Version",
      "url" : "https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2023-2557.json"
    }, {
      "category" : "self",
      "summary" : "WID-SEC-2023-2557 - Portal Version",
      "url" : "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2557"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-6417-1 vom 2023-10-05",
      "url" : "https://ubuntu.com/security/notices/USN-6417-1"
    }, {
      "category" : "external",
      "summary" : "RedHat Bugzilla vom 2021-11-22",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2025645"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5207-1 vom 2022-01-06",
      "url" : "https://ubuntu.com/security/notices/USN-5207-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0056-1 vom 2022-01-11",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/009994.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0079-1 vom 2022-01-14",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010004.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0131-1 vom 2022-01-19",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010029.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0181-1 vom 2022-01-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010073.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0197-1 vom 2022-01-26",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-January/010080.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.10-2022-008 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.10-2022-008.html"
    }, {
      "category" : "external",
      "summary" : "Amazon Linux Security Advisory ALASKERNEL-5.4-2022-010 vom 2022-01-31",
      "url" : "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-010.html"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5265-1 vom 2022-02-03",
      "url" : "https://ubuntu.com/security/notices/USN-5265-1"
    }, {
      "category" : "external",
      "summary" : "Ubuntu Security Notice USN-5278-1 vom 2022-02-09",
      "url" : "https://ubuntu.com/security/notices/USN-5278-1"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0984-1 vom 2022-03-29",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-March/010553.html"
    }, {
      "category" : "external",
      "summary" : "SUSE Security Update SUSE-SU-2022:0978-1 vom 2022-03-29",
      "url" : "https://lists.suse.com/pipermail/sle-security-updates/2022-March/010552.html"
    } ],
    "source_lang" : "en-US",
    "title" : "Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation",
    "tracking" : {
      "current_release_date" : "2023-10-04T22:00:00.000+00:00",
      "generator" : {
        "date" : "2024-08-15T17:59:26.061+00:00",
        "engine" : {
          "name" : "BSI-WID",
          "version" : "1.3.5"
        }
      },
      "id" : "WID-SEC-W-2023-2557",
      "initial_release_date" : "2021-11-22T23:00:00.000+00:00",
      "revision_history" : [ {
        "date" : "2021-11-22T23:00:00.000+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" : "2022-01-11T23:00:00.000+00:00",
        "number" : "3",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-17T23:00:00.000+00:00",
        "number" : "4",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-19T23:00:00.000+00:00",
        "number" : "5",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-25T23:00:00.000+00:00",
        "number" : "6",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2022-01-30T23:00:00.000+00:00",
        "number" : "7",
        "summary" : "Neue Updates von Amazon aufgenommen"
      }, {
        "date" : "2022-02-02T23:00:00.000+00:00",
        "number" : "8",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-02-08T23:00:00.000+00:00",
        "number" : "9",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      }, {
        "date" : "2022-03-29T22:00:00.000+00:00",
        "number" : "10",
        "summary" : "Neue Updates von SUSE aufgenommen"
      }, {
        "date" : "2023-10-04T22:00:00.000+00:00",
        "number" : "11",
        "summary" : "Neue Updates von Ubuntu aufgenommen"
      } ],
      "status" : "final",
      "version" : "11"
    }
  },
  "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" : "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" : "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-2021-4001",
    "notes" : [ {
      "category" : "description",
      "text" : "Es existiert eine Schwachstelle im Linux Kernel. Bei der Verarbeitung und Verifizierung von schreibgeschützten Karten für das ebpf-Programm besteht ein Problem, das zu einer Race Condition führen kann. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um seine Rechte zu erweitern."
    } ],
    "product_status" : {
      "known_affected" : [ "T002207", "6368", "T000126", "398363" ]
    },
    "release_date" : "2021-11-22T23:00:00.000+00:00",
    "title" : "CVE-2021-4001"
  } ]
}