Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api

{
  "id": "18618d5a54d321c3dd178b9ea9f7982aad10dc7ca3c13bc56e2489c90ac4b8c7",
  "url": "https://osv.dev/vulnerability/CVE-2026-26103",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api",
    "summary": "A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. This can permanently invalidate encryption keys and render encrypted volumes inaccessible. Successful exploitation results in a denial-of-service condition through irreversible data loss.",
    "evidence": "osv:CVE-2026-26103",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-26103",
      "aliases": [
        "CVE-2026-26103",
        "GHSA-c75h-phf8-ccjm"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/storaged-project/udisks",
              "type": "GIT",
              "events": [
                {
                  "introduced": "414618e6c61f2a207f7e40830632ff331df245c9"
                },
                {
                  "last_affected": "414618e6c61f2a207f7e40830632ff331df245c9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "last_affected": "2.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.0",
            "storaged-2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26103.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.655750823Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/downloads/content/package-browser/",
        "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26103.json",
        "https://access.redhat.com/errata/RHSA-2026:3476",
        "https://access.redhat.com/errata/RHSA-2026:5831",
        "https://access.redhat.com/security/cve/CVE-2026-26103",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26103.json",
        "https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-26103",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2433719"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "redhat",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "0:2.10.90-6.el10_1.1"
                  },
                  {
                    "fixed": "0:2.10.90-5.el10_0.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "InverseAffectedRanges"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26103.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-26103",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513648,
  "published_at": "2026-02-25T10:31:50.913+00:00"
}