PT-2026-21898 · U-Disks · Udisks

Asim Viladi Oglu Manizada · CVE-2026-26104 · Published 2026-02-25 · Updated 2026-03-02

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions udisks (affected versions not specified)

Description A flaw exists in the udisks storage management daemon that permits unprivileged users to back up LUKS encryption headers without proper authorization. This is due to a privileged D-Bus method, responsible for exporting encryption metadata, lacking a policy check. Consequently, sensitive cryptographic metadata can be read and written to locations controlled by an attacker, potentially compromising the confidentiality of encrypted storage volumes.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

ALSA-2026:3476

CVE-2026-26104

GHSA-FCVX-497G-6XMW

OPENSUSE-SU-2026:10273-1

RHSA-2026:3476

RHSA-2026:5831

Affected Products

Udisks

References · 24

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26104.json · Exploit
• https://access.redhat.com/errata/RHSA-2026:3476 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-26104 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-26104 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-3476.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-26104 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-26104 · Vendor Advisory
• https://errata.almalinux.org/10/ALSA-2026-3476.html · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-26104 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2433717 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10273-1 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:5831 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:3476 · Vendor Advisory
• https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw · Note
• https://bugzilla.redhat.com/2433719 · Note