CVE-2026-26103
HIGHRed Hat Enterprise Linux - Unauthenticated Denial of Service via udisks LUKS Header Restoration
Title source: llmDescription
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.
References (5)
Core 5
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:3476
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:5831
https://access.redhat.com/errata/RHSA-2026:5831
Vendor Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-26103
Vendor Advisory issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2433719
Scores
CVSS v3
7.1
EPSS
0.0001
EPSS Percentile
1.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (8)
freedesktop/udisks
2.0.0
Red Hat/Red Hat Enterprise Linux 10
0:2.10.90-6.el10_1.1
Red Hat/Red Hat Enterprise Linux 10.0 Extended Update Support
0:2.10.90-5.el10_0.2
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
redhat/enterprise_linux
10.0
Published
Feb 25, 2026
Tracked Since
Feb 25, 2026