Medium severity · published Feb 25, 2026
CVE-2026-26104
Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: vendor
EL
Enterprise Linux · Redhat
10.0 · source: NVD
UD
Udisks · Freedesktop
2.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26104
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26104
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:3476
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:5831
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-26104
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2433717
github.com
https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw
More from Red Hat Enterprise Linux 10
7.8
CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing
7.8
CVE-2026-31431
crypto: algif_aead - Revert to operating out-of-place
7.5
CVE-2026-34486
Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
10.0
CVE-2026-46595
Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh
10.0
CVE-2026-34078
Flatpak has a complete sandbox escape leading to host file access and code execution in the host context
