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UnratedFix available

moby v29.9.0-rc.1

Type: patchSources: Moby

This release fixes an issue that could cause encrypted overlay-network traffic to be transmitted in cleartext in some circumstances. The stated confidentiality impact is limited to unidirectional flows and handshake attempts that do not proceed.

Products
moby
Affected versions
Not specified
Fixed versions
v29.9.0-rc.1
CVEs
Not specified
Confirmed fixed CVEs
Not specified
Updated in this feed
29 Oct 2026, 07:25 UTC · Revision 1

Source evidence

moby v29.9.0-rc.1

github-moby-moby · Original source

Published 1 Oct 2026, 20:56 UTC

This release fixes an issue that could cause encrypted overlay-network traffic to be transmitted in cleartext in some circumstances. The stated confidentiality impact is limited to unidirectional flows and handshake attempts that do not proceed.

Fix an issue where errors programming the kernel to encrypt the overlay network data-plane could in some circumstances lead to encrypted-overlay-network traffic to some nodes being transmitted in cleartext.

moby

Fixed versions: v29.9.0-rc.1

Complete source record
{
  "id": "a0d0eba6e7798e41a02d5a9dc33d535d1ee9e2b698a4c97c0a1afff015959175",
  "url": "https://github.com/moby/moby/releases/tag/docker-v29.9.0-rc.1",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "moby v29.9.0-rc.1",
    "summary": "This release fixes an issue that could cause encrypted overlay-network traffic to be transmitted in cleartext in some circumstances. The stated confidentiality impact is limited to unidirectional flows and handshake attempts that do not proceed.",
    "evidence": "Fix an issue where errors programming the kernel to encrypt the overlay network data-plane could in some circumstances lead to encrypted-overlay-network traffic to some nodes being transmitted in cleartext.",
    "products": [
      {
        "name": {
          "value": "moby",
          "evidence": "Release notes from moby"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "v29.9.0-rc.1",
            "evidence": "v29.9.0-rc.1"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-moby-moby",
  "document_id": 21813,
  "published_at": "2026-10-01T20:56:17+00:00"
}