Vulnerability-Lookup

GHSA-M854-42X8-286M

Vulnerability from github – Published: 2026-11-03 21:32 – Updated: 2026-11-03 21:32

Details

In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected.

Severity

9.2 (Critical)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-112917"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-424"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-03T19:17:53Z",
    "severity": "CRITICAL"
  },
  "details": "In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected.",
  "id": "GHSA-m854-42x8-286m",
  "modified": "2026-11-03T21:32:12Z",
  "published": "2026-11-03T21:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112917"
    },
    {
      "type": "WEB",
      "url": "https://docs.docker.com/desktop/release-notes/#4980"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/WSL/releases/tag/3.0.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/linux-msft-wsl-6.18.54.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-112917 (GCVE-0-2026-112917)

Vulnerability from cvelistv5 – Published: 2026-11-03 19:08 – Updated: 2026-11-04 13:33

Title

Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall

Summary

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-04 04:56 UTC

CWE

CWE-424 - Improper Protection of Alternate Path

Assigner

Docker CNA under the mitre root

CNA scorecard B 88/100 over 42 records in the last 180 days details

References

3 references

URL	Tags
https://docs.docker.com/desktop/release-notes/#4980	release-notes
https://github.com/microsoft/WSL/releases/tag/3.0.3	release-notes
https://github.com/microsoft/WSL2-Linux-Kernel/re…	release-notes

Impacted products

1 product

Vendor	Product	Version
Docker	Docker Desktop	Unaffected: 4.98.0 , < * (semver)

Credits

Oryam Halachmi of Deune Tevel Halachmi of Deune

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-112917",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-04T04:56:32.458790Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-04T13:33:36.124Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "modules": [
            "WSL2 backend"
          ],
          "platforms": [
            "Windows"
          ],
          "product": "Docker Desktop",
          "vendor": "Docker",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "4.98.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Affects the WSL2 backend on x86-64 hosts (32-bit syscall compatibility is enabled in stock WSL kernels). Host-file access requires a reachable host-side AF_VSOCK service. The fix requires WSL 3.0.3 (kernel 6.18.54.1) or later."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Oryam Halachmi of Deune"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Tevel Halachmi of Deune"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-424",
              "description": "CWE-424: Improper Protection of Alternate Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-03T19:08:11.422Z",
        "orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
        "shortName": "Docker"
      },
      "references": [
        {
          "name": "Docker Desktop release notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://docs.docker.com/desktop/release-notes/#4980"
        },
        {
          "name": "Microsoft WSL 3.0.3 release notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/microsoft/WSL/releases/tag/3.0.3"
        },
        {
          "name": "Microsoft WSL kernel 6.18.54.1 dependency release notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/linux-msft-wsl-6.18.54.1"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Both are required."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
    "assignerShortName": "Docker",
    "cveId": "CVE-2026-112917",
    "datePublished": "2026-11-03T19:08:11.422Z",
    "dateReserved": "2026-10-19T20:23:38.311Z",
    "dateUpdated": "2026-11-04T13:33:36.124Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted