WID-SEC-W-2026-1232

Vulnerability from csaf_certbund - Published: 2026-04-21 22:00 - Updated: 2026-05-03 22:00
Summary
Linux Kernel: Mehrere Schwachstellen
Severity
Hoch
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 seine Privilegien zu erhöhen, um einen Denial of Service Zustand oder andere, nicht näher spezifizierte Auswirkungen zu erzielen.
Betroffene Betriebssysteme: - Linux
CVE-2026-31432
CVE-2026-31433
CVE-2026-31431
References
To clipboard 

{
  "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 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 seine Privilegien zu erh\u00f6hen, um einen Denial of Service Zustand oder andere, nicht n\u00e4her spezifizierte Auswirkungen zu erzielen.",
        "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-2026-1232 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1232.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1232 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1232"
      },
      {
        "category": "external",
        "summary": "Kernel CVE Announce Mailingliste",
        "url": "https://lore.kernel.org/linux-cve-announce/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-31431",
        "url": "https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-31432",
        "url": "https://lore.kernel.org/linux-cve-announce/2026042216-CVE-2026-31432-e990@gregkh/"
      },
      {
        "category": "external",
        "summary": "Linux Kernel CVE Announcement CVE-2026-31433",
        "url": "https://lore.kernel.org/linux-cve-announce/2026042216-CVE-2026-31433-51e6@gregkh/"
      },
      {
        "category": "external",
        "summary": "CopyFail (CVE-2026-31431) Exploit-Code vom 2026-04-29",
        "url": "https://github.com/badsectorlabs/copyfail-go"
      },
      {
        "category": "external",
        "summary": "CopyFail (CVE-2026-31431) Webseite vom 2026-04-29",
        "url": "https://copy.fail/"
      },
      {
        "category": "external",
        "summary": "CISA Known Exploited Vulnerabilities Catalog CVE-2026-31431 vom 2026-05-03",
        "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-31431"
      }
    ],
    "source_lang": "en-US",
    "title": "Linux Kernel: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-05-03T22:00:00.000+00:00",
      "generator": {
        "date": "2026-05-04T04:59:13.154+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-1232",
      "initial_release_date": "2026-04-21T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-04-21T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-04-22T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-24639, EUVD-2026-24641"
        },
        {
          "date": "2026-04-29T22:00:00.000+00:00",
          "number": "3",
          "summary": "Beschreibung CVE-2026-31431 angepasst, Exploit verf\u00fcgbar"
        },
        {
          "date": "2026-05-03T22:00:00.000+00:00",
          "number": "4",
          "summary": "CVE-2026-31431 wird aktiv ausgenutzt"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Open Source Linux Kernel",
            "product": {
              "name": "Open Source Linux Kernel",
              "product_id": "T028462",
              "product_identification_helper": {
                "cpe": "cpe:/o:linux:linux_kernel:unspecified"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-31432",
      "product_status": {
        "known_affected": [
          "T028462"
        ]
      },
      "release_date": "2026-04-21T22:00:00.000+00:00",
      "title": "CVE-2026-31432"
    },
    {
      "cve": "CVE-2026-31433",
      "product_status": {
        "known_affected": [
          "T028462"
        ]
      },
      "release_date": "2026-04-21T22:00:00.000+00:00",
      "title": "CVE-2026-31433"
    },
    {
      "cve": "CVE-2026-31431",
      "product_status": {
        "known_affected": [
          "T028462"
        ]
      },
      "release_date": "2026-04-29T22:00:00.000+00:00",
      "title": "CVE-2026-31431"
    }
  ]
}


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Sightings

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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.



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