{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/docker/docker"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "28.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/moby/moby/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.0-beta.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/moby/moby"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "28.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42306"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367",
      "CWE-61"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T17:53:08Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\n\nA race condition during `docker cp` mount setup allows a malicious container to redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service.\n\n## Details\n\nWhen copying files into a container, the daemon sets up a temporary filesystem view by bind-mounting volumes into a private mount namespace. During this setup, the mount destination is created inside the container root and then a bind mount is attached using the container-relative path resolved to an absolute host path.\n\nBetween mountpoint creation and the `mount()` syscall, a process running inside the container can replace the destination (or a parent path component) with a symlink pointing to an arbitrary location on the host. The `mount()` syscall follows the symlink, causing the volume to be bind-mounted onto an arbitrary host path instead of the intended container path.\n\n## Impact\n\nA malicious container can redirect a volume bind mount to an arbitrary host path. The impact depends on the volume content and mount options:\n\n- If the volume is writable, arbitrary host files at the redirected path could be overwritten with the volume\u0027s contents.\n- If the volume is read-only, the host path is masked by the mount for the duration of the operation, causing denial of service.\n- In all cases the mount is temporary (torn down after the `docker cp` completes), but the effects of any writes persist.\n\n### Conditions for exploitation\n\n- A container must have at least one volume mount.\n- A process inside the container must be able to rapidly create and swap symlinks at the volume mount destination path.\n- An operator must initiate a `docker cp` into that container, or call the `PUT /containers/{id}/archive` or `HEAD /containers/{id}/archive` API endpoints.\n\n### Not affected\n\n- Containers that do not have volume mounts are not affected, as the race occurs during volume bind-mount setup.\n\n## Workarounds\n\n- Only run containers from trusted images.\n- Avoid using `docker cp` with untrusted running containers.\n- Use authorization plugins to restrict access to the archive API endpoints (`PUT /containers/{id}/archive`, `HEAD /containers/{id}/archive`).",
  "id": "GHSA-rg2x-37c3-w2rh",
  "modified": "2026-05-18T17:53:08Z",
  "published": "2026-05-18T17:53:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/moby/moby"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Docker: Race condition in docker cp allows bind mount redirection to host path"
}

{
  "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": "Docker ist eine Open-Source-Software, die dazu verwendet werden kann, Anwendungen mithilfe von Betriebssystemvirtualisierung in Containern zu isolieren.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann mehrere Schwachstellen in docker ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuf\u00fchren, einen Denial-of-Service-Zustand zu verursachen oder Daten zu manipulieren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX\n- Windows",
        "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-2026-1584 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1584.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1584 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1584"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-rg2x-37c3-w2rh vom 2026-05-18",
        "url": "https://github.com/advisories/GHSA-rg2x-37c3-w2rh"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-vp62-88p7-qqf5 vom 2026-05-18",
        "url": "https://github.com/advisories/GHSA-vp62-88p7-qqf5"
      },
      {
        "category": "external",
        "summary": "GitHub Security Advisory GHSA-x86f-5xw2-fm2r vom 2026-05-18",
        "url": "https://github.com/advisories/GHSA-x86f-5xw2-fm2r"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2DOCKER-2026-126 vom 2026-06-08",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2DOCKER-2026-126.html"
      }
    ],
    "source_lang": "en-US",
    "title": "docker: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-06-08T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-09T08:41:28.888+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1584",
      "initial_release_date": "2026-05-18T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-18T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-06-04T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-34779"
        },
        {
          "date": "2026-06-08T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Amazon aufgenommen"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "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": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c29.5.1",
                "product": {
                  "name": "Open Source docker \u003c29.5.1",
                  "product_id": "T054310"
                }
              },
              {
                "category": "product_version",
                "name": "29.5.1",
                "product": {
                  "name": "Open Source docker 29.5.1",
                  "product_id": "T054310-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:docker:docker:29.5.1"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "docker"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-41567",
      "product_status": {
        "known_affected": [
          "T054310",
          "398363"
        ]
      },
      "release_date": "2026-05-18T22:00:00.000+00:00",
      "title": "CVE-2026-41567"
    },
    {
      "cve": "CVE-2026-41568",
      "product_status": {
        "known_affected": [
          "T054310",
          "398363"
        ]
      },
      "release_date": "2026-05-18T22:00:00.000+00:00",
      "title": "CVE-2026-41568"
    },
    {
      "cve": "CVE-2026-42306",
      "product_status": {
        "known_affected": [
          "T054310",
          "398363"
        ]
      },
      "release_date": "2026-05-18T22:00:00.000+00:00",
      "title": "CVE-2026-42306"
    }
  ]
}