WID-SEC-W-2025-2776

Vulnerability from csaf_certbund - Published: 2020-05-12 22:00 - Updated: 2025-12-09 23:00
Summary
Linux Kernel: Schwachstelle ermöglichen Umgehen von Sicherheitsvorkehrungen

Notes

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.
Produktbeschreibung
Der Kernel stellt den Kern des Linux Betriebssystems dar.
Angriff
Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Betroffene Betriebssysteme
- Linux
To clipboard 

{
  "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 Sicherheitsvorkehrungen zu umgehen.",
        "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-2025-2776 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2025-2776.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2025-2776 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2776"
      },
      {
        "category": "external",
        "summary": "National Vulnerability Database CVE-2020-12826 vom 2020-05-12",
        "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12826"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-4391-1 vom 2020-06-10",
        "url": "https://usn.ubuntu.com/4391-1/"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA 2241 vom 2020-06-10",
        "url": "https://lists.debian.org/debian-lts-announce/2020/debian-lts-announce-202006/msg00013.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:4062 vom 2020-09-29",
        "url": "https://access.redhat.com/errata/RHSA-2020:4062"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:4060 vom 2020-09-29",
        "url": "https://access.redhat.com/errata/RHSA-2020:4060"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory ASA-2020-140 vom 2020-10-14",
        "url": "https://downloads.avaya.com/css/P8/documents/101071393"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:4431 vom 2020-11-04",
        "url": "https://access.redhat.com/errata/RHSA-2020:4431"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2020:4609 vom 2020-11-04",
        "url": "https://access.redhat.com/errata/RHSA-2020:4609"
      },
      {
        "category": "external",
        "summary": "AVAYA Security Advisory ASA-2020-155 vom 2020-12-08",
        "url": "https://downloads.avaya.com/css/P8/documents/101072832"
      },
      {
        "category": "external",
        "summary": "NetApp Security Advisory NTAP-20200608-0001 vom 2025-12-10",
        "url": "https://security.netapp.com/advisory/NTAP-20200608-0001"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glichen Umgehen von Sicherheitsvorkehrungen",
    "tracking": {
      "current_release_date": "2025-12-09T23:00:00.000+00:00",
      "generator": {
        "date": "2025-12-10T07:50:38.105+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2025-2776",
      "initial_release_date": "2020-05-12T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2020-05-12T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2020-06-09T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2020-06-11T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Debian aufgenommen"
        },
        {
          "date": "2020-09-29T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-10-13T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2020-11-03T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2020-12-09T23:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von AVAYA aufgenommen"
        },
        {
          "date": "2025-12-09T23:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von NetApp aufgenommen"
        }
      ],
      "status": "final",
      "version": "8"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Avaya Aura Application Enablement Services",
            "product": {
              "name": "Avaya Aura Application Enablement Services",
              "product_id": "T015516",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_application_enablement_services:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Communication Manager",
            "product": {
              "name": "Avaya Aura Communication Manager",
              "product_id": "T015126",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:communication_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Experience Portal",
            "product": {
              "name": "Avaya Aura Experience Portal",
              "product_id": "T015519",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_experience_portal:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura Session Manager",
            "product": {
              "name": "Avaya Aura Session Manager",
              "product_id": "T015127",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:session_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Aura System Manager",
            "product": {
              "name": "Avaya Aura System Manager",
              "product_id": "T015518",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:aura_system_manager:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "Avaya Web License Manager",
            "product": {
              "name": "Avaya Web License Manager",
              "product_id": "T016243",
              "product_identification_helper": {
                "cpe": "cpe:/a:avaya:web_license_manager:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Avaya"
      },
      {
        "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": "NetApp ActiveIQ Unified Manager",
            "product": {
              "name": "NetApp ActiveIQ Unified Manager",
              "product_id": "T025152",
              "product_identification_helper": {
                "cpe": "cpe:/a:netapp:active_iq_unified_manager:for_vmware_vsphere"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "NetApp"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c5.6.5",
                "product": {
                  "name": "Open Source Linux Kernel \u003c5.6.5",
                  "product_id": "740549"
                }
              },
              {
                "category": "product_version",
                "name": "5.6.5",
                "product": {
                  "name": "Open Source Linux Kernel 5.6.5",
                  "product_id": "740549-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:linux:linux_kernel:5.6.5"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Linux Kernel"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "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-2020-12826",
      "product_status": {
        "known_affected": [
          "T015519",
          "T025152",
          "T015518",
          "2951",
          "67646",
          "T015516",
          "T000126",
          "T015127",
          "T015126",
          "740549",
          "T016243"
        ]
      },
      "release_date": "2020-05-12T22:00:00.000+00:00",
      "title": "CVE-2020-12826"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.