{
  "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 f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "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 einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-2503 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2503.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-2503 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2503"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2023-13043 vom 2023-12-14",
        "url": "https://linux.oracle.com/errata/ELSA-2023-13043.html"
      },
      {
        "category": "external",
        "summary": "Linux Security Notification vom 2023-09-27",
        "url": "https://seclists.org/oss-sec/2023/q3/242"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2023-C3BB819677 vom 2023-10-07",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2023-c3bb819677"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2023-50BD7C9C12 vom 2023-10-07",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2023-50bd7c9c12"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2023-830D9EC624 vom 2023-10-07",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2023-830d9ec624"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALASKERNEL-5.15-2023-028 vom 2023-10-18",
        "url": "https://alas.aws.amazon.com/AL2/ALASKERNEL-5.15-2023-028.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6444-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6444-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6445-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6445-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6443-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6443-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6446-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6446-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6441-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6441-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6442-1 vom 2023-10-20",
        "url": "https://ubuntu.com/security/notices/USN-6442-1"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-3623 vom 2023-10-19",
        "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6441-2 vom 2023-10-23",
        "url": "https://ubuntu.com/security/notices/USN-6441-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6444-2 vom 2023-10-24",
        "url": "https://ubuntu.com/security/notices/USN-6444-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6445-2 vom 2023-10-24",
        "url": "https://ubuntu.com/security/notices/USN-6445-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6446-2 vom 2023-10-24",
        "url": "https://ubuntu.com/security/notices/USN-6446-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6446-3 vom 2023-10-26",
        "url": "https://ubuntu.com/security/notices/USN-6446-3"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6454-1 vom 2023-10-26",
        "url": "https://ubuntu.com/security/notices/USN-6454-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6454-2 vom 2023-10-30",
        "url": "https://ubuntu.com/security/notices/USN-6454-2"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6441-3 vom 2023-10-30",
        "url": "https://ubuntu.com/security/notices/USN-6441-3"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6466-1 vom 2023-10-31",
        "url": "https://ubuntu.com/security/notices/USN-6466-1"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6454-3 vom 2023-10-31",
        "url": "https://ubuntu.com/security/notices/USN-6454-3"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-6454-4 vom 2023-11-01",
        "url": "https://ubuntu.com/security/notices/USN-6454-4"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2023-12974 vom 2023-11-13",
        "url": "https://oss.oracle.com/pipermail/el-errata/2023-November/014870.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2024:2394 vom 2024-04-30",
        "url": "https://access.redhat.com/errata/RHSA-2024:2394"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7152469 vom 2024-05-15",
        "url": "https://www.ibm.com/support/pages/node/7152469"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2024-05-15T22:00:00.000+00:00",
      "generator": {
        "date": "2024-05-16T08:04:49.090+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-2503",
      "initial_release_date": "2023-09-27T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-09-27T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2023-10-08T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2023-10-17T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2023-10-19T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Ubuntu und Debian aufgenommen"
        },
        {
          "date": "2023-10-23T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-10-24T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-10-26T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-10-30T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-10-31T23:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-11-01T23:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2023-11-13T23:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2023-12-14T23:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2024-04-29T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2024-05-15T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von IBM aufgenommen"
        }
      ],
      "status": "final",
      "version": "14"
    }
  },
  "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": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74185",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "12",
                "product": {
                  "name": "IBM Security Guardium 12.0",
                  "product_id": "T031092",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:security_guardium:12.0"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Security Guardium"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=6.5.rc7",
                "product": {
                  "name": "Open Source Linux Kernel \u003c=6.5.rc7",
                  "product_id": "T030113",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:6.5.rc7"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=6.1",
                "product": {
                  "name": "Open Source Linux Kernel \u003c=6.1",
                  "product_id": "T030114",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:6.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=5.10",
                "product": {
                  "name": "Open Source Linux Kernel \u003c=5.10",
                  "product_id": "T030115",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.10"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "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": "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-2023-42756",
      "notes": [
        {
          "category": "description",
          "text": "Es besteht eine Schwachstelle im Linux-Kernel. Dieser Fehler besteht netfilter/ip_set aufgrund einer Race Condition. Ein lokaler Angreifer kann diese Schwachstelle ausnutzen, um einen Denial-of-Service-Zustand zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T030114",
          "T030113",
          "2951",
          "67646",
          "T030115",
          "T000126",
          "T031092",
          "398363",
          "T004914",
          "74185"
        ]
      },
      "release_date": "2023-09-27T22:00:00Z",
      "title": "CVE-2023-42756"
    }
  ]
}