WID-SEC-W-2026-2640

Vulnerability from csaf_certbund - Published: 2026-08-03 22:00 - Updated: 2026-08-09 22:00
Summary
Linux Kernel: Mehrere Schwachstellen
Severity
Kritisch
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 Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um vertrauliche Informationen offenzulegen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder seine Rechte zu erweitern.
Betroffene Betriebssysteme: - Linux
CVE-2026-64561
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source Linux Kernel
Open Source
 cpe:/o:linux:linux_kernel:- —
CVE-2026-64562
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source Linux Kernel
Open Source
 cpe:/o:linux:linux_kernel:- —
CVE-2026-64563
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source Linux Kernel
Open Source
 cpe:/o:linux:linux_kernel:- —
CVE-2026-64564
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source Linux Kernel
Open Source
 cpe:/o:linux:linux_kernel:- —
CVE-2026-64565
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
Open Source Linux Kernel
Open Source
 cpe:/o:linux:linux_kernel:- —
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "kritisch"
    },
    "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 Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um vertrauliche Informationen offenzulegen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder seine Rechte zu erweitern.",
        "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-2026-2640 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2640.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2640 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2640"
      },
      {
        "category": "external",
        "summary": "Kernel CVE Announce Mailingliste",
        "url": "https://lore.kernel.org/linux-cve-announce/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-64561",
        "url": "https://lore.kernel.org/linux-cve-announce/2026080401-CVE-2026-64561-d0d4@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-64562",
        "url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64562-8875@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-64563",
        "url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64563-9d7f@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-64564",
        "url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64564-6762@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-64565",
        "url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64565-557c@gregkh/"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-500137 vom 2026-08-07",
        "url": "http://linux.oracle.com/errata/ELSA-2026-500137.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-500135 vom 2026-08-07",
        "url": "http://linux.oracle.com/errata/ELSA-2026-500135.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-500135 vom 2026-08-06",
        "url": "https://linux.oracle.com/errata/ELSA-2026-500135.html"
      },
      {
        "category": "external",
        "summary": "Ecploit von Tencent Zhuque Lab vom 2026-08-09",
        "url": "https://matrix.tencent.com/en/2026/08/06/sctphantom-CVE-2026-64564"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-08-09T22:00:00.000+00:00",
      "generator": {
        "date": "2026-08-10T08:11:08.230+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2640",
      "initial_release_date": "2026-08-03T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-08-03T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-08-06T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2026-08-09T22:00:00.000+00:00",
          "number": "3",
          "summary": "Beschreibung und Bewertung aufgrund neuer Informationen angepasst, Exploit aufgenommen"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "T057519",
              "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": "T056236",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-64561",
      "product_status": {
        "known_affected": [
          "T056236",
          "T057519"
        ]
      },
      "release_date": "2026-08-03T22:00:00.000+00:00",
      "title": "CVE-2026-64561"
    },
    {
      "cve": "CVE-2026-64562",
      "product_status": {
        "known_affected": [
          "T056236",
          "T057519"
        ]
      },
      "release_date": "2026-08-03T22:00:00.000+00:00",
      "title": "CVE-2026-64562"
    },
    {
      "cve": "CVE-2026-64563",
      "product_status": {
        "known_affected": [
          "T056236",
          "T057519"
        ]
      },
      "release_date": "2026-08-03T22:00:00.000+00:00",
      "title": "CVE-2026-64563"
    },
    {
      "cve": "CVE-2026-64564",
      "product_status": {
        "known_affected": [
          "T056236",
          "T057519"
        ]
      },
      "release_date": "2026-08-03T22:00:00.000+00:00",
      "title": "CVE-2026-64564"
    },
    {
      "cve": "CVE-2026-64565",
      "product_status": {
        "known_affected": [
          "T056236",
          "T057519"
        ]
      },
      "release_date": "2026-08-03T22:00:00.000+00:00",
      "title": "CVE-2026-64565"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.