{"id":"CVE-2026-26104","summary":"Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api","details":"A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.","aliases":["GHSA-fcvx-497g-6xmw"],"modified":"2026-08-12T03:51:16.481585014Z","published":"2026-02-25T10:51:15.204Z","related":["ALSA-2026:3476","openSUSE-SU-2026:10273-1"],"database_specific":{"cna_assigner":"redhat","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26104.json"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3476"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:5831"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-26104"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26104.json"},{"type":"ADVISORY","url":"https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26104"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2433717"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/storaged-project/udisks","events":[{"introduced":"414618e6c61f2a207f7e40830632ff331df245c9"},{"last_affected":"414618e6c61f2a207f7e40830632ff331df245c9"}],"database_specific":{"cpe":"cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*","extracted_events":[{"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-2026-26104.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}