WID-SEC-W-2026-1190

Vulnerability from csaf_certbund - Published: 2026-04-20 22:00 - Updated: 2026-07-01 22:00
Summary
GNU libc: 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: Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalität bereitstellt.
Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um Dateien zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
Betroffene Betriebssysteme: - Linux - UNIX
Affected products
Product Identifier Version Remediation
SUSE Linux
SUSE
cpe:/o:suse:suse_linux:-
SUSE openSUSE
SUSE
cpe:/o:suse:opensuse:-
Oracle Linux
Oracle
cpe:/o:oracle:linux:-
RESF Rocky Linux
RESF
cpe:/o:resf:rocky_linux:-
Affected products
Product Identifier Version Remediation
SUSE Linux
SUSE
cpe:/o:suse:suse_linux:-
Red Hat Enterprise Linux
Red Hat
cpe:/o:redhat:enterprise_linux:-
SUSE openSUSE
SUSE
cpe:/o:suse:opensuse:-
Oracle Linux
Oracle
cpe:/o:oracle:linux:-
RESF Rocky Linux
RESF
cpe:/o:resf:rocky_linux:-
Fedora Linux
Fedora
cpe:/o:fedoraproject:fedora:-
Product Identifier Version Remediation
Open Source GNU libc <=2.43
Open Source / GNU libc
<=2.43
Affected products
Product Identifier Version Remediation
SUSE Linux
SUSE
cpe:/o:suse:suse_linux:-
Red Hat Enterprise Linux
Red Hat
cpe:/o:redhat:enterprise_linux:-
SUSE openSUSE
SUSE
cpe:/o:suse:opensuse:-
Oracle Linux
Oracle
cpe:/o:oracle:linux:-
RESF Rocky Linux
RESF
cpe:/o:resf:rocky_linux:-
Fedora Linux
Fedora
cpe:/o:fedoraproject:fedora:-
Product Identifier Version Remediation
Open Source GNU libc <=2.43
Open Source / GNU libc
<=2.43
References
URL Category
https://wid.cert-bund.de/.well-known/csaf/white/2… self
https://wid.cert-bund.de/portal/wid/securityadvis… self
https://seclists.org/oss-sec/2026/q2/189 external
https://bodhi.fedoraproject.org/updates/FEDORA-20… external
https://access.redhat.com/errata/RHSA-2026:12740 external
https://bodhi.fedoraproject.org/updates/FEDORA-20… external
https://lists.opensuse.org/archives/list/security… external
https://lists.opensuse.org/archives/list/security… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://lists.suse.com/pipermail/sle-security-upd… external
https://access.redhat.com/errata/RHSA-2026:33231 external
https://access.redhat.com/errata/RHSA-2026:33226 external
https://access.redhat.com/errata/RHSA-2026:33126 external
https://access.redhat.com/errata/RHSA-2026:33228 external
https://access.redhat.com/errata/RHSA-2026:33229 external
https://access.redhat.com/errata/RHSA-2026:33170 external
https://access.redhat.com/errata/RHSA-2026:33092 external
https://access.redhat.com/errata/RHSA-2026:33227 external
https://access.redhat.com/errata/RHSA-2026:33230 external
https://errata.build.resf.org/RLSA-2026:33126 external
https://linux.oracle.com/errata/ELSA-2026-33226.html external
https://errata.build.resf.org/RLSA-2026:33226 external
https://access.redhat.com/errata/RHSA-2026:34211 external

{
  "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": "Die GNU libc ist die Basis C Bibliothek unter Linux sowie anderen Unix-Betriebssystemen, welche die Systemaufrufe sowie Basisfunktionalit\u00e4t bereitstellt.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GNU libc ausnutzen, um Dateien zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder andere, nicht n\u00e4her spezifizierte Angriffe durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "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-2026-1190 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1190.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1190 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1190"
      },
      {
        "category": "external",
        "summary": "OSS Security Mailing List vom 2026-04-20",
        "url": "https://seclists.org/oss-sec/2026/q2/189"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-CED72AB158 vom 2026-04-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-ced72ab158"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:12740 vom 2026-05-01",
        "url": "https://access.redhat.com/errata/RHSA-2026:12740"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-4B7780802C vom 2026-05-01",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-4b7780802c"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:10770-1 vom 2026-05-15",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RZ66BJVG5ICINPYD2UIFBTZGO2QB73FQ/"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:20764-1 vom 2026-05-19",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/KXZJBCTUEFVIXIGM4B4CGZUUH4CCN6SO/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21682-1 vom 2026-05-19",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026155.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21688-1 vom 2026-05-21",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026237.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21780-1 vom 2026-05-26",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026283.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21751-1 vom 2026-05-26",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026307.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21807-1 vom 2026-05-27",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026338.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:2231-1 vom 2026-06-04",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026584.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:2333-1 vom 2026-06-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026684.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:2440-1 vom 2026-06-18",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-June/026824.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33231 vom 2026-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2026:33231"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33226 vom 2026-06-30",
        "url": "https://access.redhat.com/errata/RHSA-2026:33226"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33126 vom 2026-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2026:33126"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33228 vom 2026-06-30",
        "url": "https://access.redhat.com/errata/RHSA-2026:33228"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33229 vom 2026-06-30",
        "url": "https://access.redhat.com/errata/RHSA-2026:33229"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33170 vom 2026-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2026:33170"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33092 vom 2026-06-30",
        "url": "https://access.redhat.com/errata/RHSA-2026:33092"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33227 vom 2026-06-29",
        "url": "https://access.redhat.com/errata/RHSA-2026:33227"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:33230 vom 2026-06-30",
        "url": "https://access.redhat.com/errata/RHSA-2026:33230"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:33126 vom 2026-07-01",
        "url": "https://errata.build.resf.org/RLSA-2026:33126"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-33226 vom 2026-07-01",
        "url": "https://linux.oracle.com/errata/ELSA-2026-33226.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:33226 vom 2026-07-01",
        "url": "https://errata.build.resf.org/RLSA-2026:33226"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:34211 vom 2026-07-01",
        "url": "https://access.redhat.com/errata/RHSA-2026:34211"
      }
    ],
    "source_lang": "en-US",
    "title": "GNU libc: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-07-01T22:00:00.000+00:00",
      "generator": {
        "date": "2026-07-02T09:23:10.917+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1190",
      "initial_release_date": "2026-04-20T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-04-20T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-04-21T22:00:00.000+00:00",
          "number": "2",
          "summary": "Korrektur Versionsangabe, defekte Links entfernt"
        },
        {
          "date": "2026-05-03T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora und Red Hat aufgenommen"
        },
        {
          "date": "2026-05-05T22:00:00.000+00:00",
          "number": "4",
          "summary": "CVE CVE-2026-5358 zur\u00fcckgezogen"
        },
        {
          "date": "2026-05-17T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von openSUSE aufgenommen"
        },
        {
          "date": "2026-05-18T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von openSUSE aufgenommen"
        },
        {
          "date": "2026-05-19T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-21T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-26T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-27T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-04T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-10T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-18T22:00:00.000+00:00",
          "number": "13",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-06-29T22:00:00.000+00:00",
          "number": "14",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-06-30T22:00:00.000+00:00",
          "number": "15",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
        },
        {
          "date": "2026-07-01T22:00:00.000+00:00",
          "number": "16",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation und Red Hat aufgenommen"
        }
      ],
      "status": "final",
      "version": "16"
    }
  },
  "product_tree": {
    "branches": [
      {
        "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_range",
                "name": "\u003c=2.43",
                "product": {
                  "name": "Open Source GNU libc \u003c=2.43",
                  "product_id": "T053037"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c=2.43",
                "product": {
                  "name": "Open Source GNU libc \u003c=2.43",
                  "product_id": "T053037-fixed"
                }
              }
            ],
            "category": "product_name",
            "name": "GNU libc"
          }
        ],
        "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": "RESF Rocky Linux",
            "product": {
              "name": "RESF Rocky Linux",
              "product_id": "T032255",
              "product_identification_helper": {
                "cpe": "cpe:/o:resf:rocky_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "RESF"
      },
      {
        "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": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T027843",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-5358",
      "product_status": {
        "known_affected": [
          "T002207",
          "T027843",
          "T004914",
          "T032255"
        ]
      },
      "release_date": "2026-04-20T22:00:00.000+00:00",
      "title": "CVE-2026-5358"
    },
    {
      "cve": "CVE-2026-5450",
      "product_status": {
        "known_affected": [
          "T002207",
          "67646",
          "T027843",
          "T004914",
          "T032255",
          "74185"
        ],
        "last_affected": [
          "T053037"
        ]
      },
      "release_date": "2026-04-20T22:00:00.000+00:00",
      "title": "CVE-2026-5450"
    },
    {
      "cve": "CVE-2026-5928",
      "product_status": {
        "known_affected": [
          "T002207",
          "67646",
          "T027843",
          "T004914",
          "T032255",
          "74185"
        ],
        "last_affected": [
          "T053037"
        ]
      },
      "release_date": "2026-04-20T22:00:00.000+00:00",
      "title": "CVE-2026-5928"
    }
  ]
}



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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

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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.
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