Libblockdev: lpe from allow_active to root in libblockdev via udisks

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Summary

CVECVE-2025-6019
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-06-19 12:15:19 UTC
Updated2026-06-30 11:16:26 UTC
DescriptionA Local Privilege Escalation (LPE) vulnerability was found in libblockdev. Generally, the "allow_active" setting in Polkit permits a physically present user to take certain actions based on the session type. Due to the way libblockdev interacts with the udisks daemon, an "allow_active" user on a system may be able escalate to full root privileges on the target host. Normally, udisks mounts user-provided filesystem images with security flags like nosuid and nodev to prevent privilege escalation. However, a local attacker can create a specially crafted XFS image containing a SUID-root shell, then trick udisks into resizing it. This mounts their malicious filesystem with root privileges, allowing them to execute their SUID-root shell and gain complete control of the system.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.004230000 probability, percentile 0.340780000 (date 2026-07-02)

Problem Types: CWE-250 | CWE-250 Execution with Unnecessary Privileges

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 10 unaffected 0:3.2.0-4.el10_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support unaffected 0:2.18-5.el7_9.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:2.28-7.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support unaffected 0:2.19-13.el8_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support unaffected 0:2.24-6.el8_4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support unaffected 0:2.24-9.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service unaffected 0:2.24-9.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Update Services For SAP Solutions unaffected 0:2.24-9.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions unaffected 0:2.28-3.el8_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:2.28-14.el9_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Update Services For SAP Solutions unaffected 0:2.25-12.el9_0 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions unaffected 0:2.28-5.el9_2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support unaffected 0:2.28-11.el9_4 * rpm Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2025:9326 [email protected] access.redhat.com
cdn2.qualys.com/2025/06/17/suse15-pam-udisks-lpe.txt [email protected] cdn2.qualys.com
access.redhat.com/errata/RHSA-2025:9878 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:9325 [email protected] access.redhat.com
access.redhat.com/security/cve/CVE-2025-6019 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:9323 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:9328 [email protected] access.redhat.com
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
www.bleepingcomputer.com/news/linux/new-linux-udisks-flaw-lets-attackers-get-root-on-m... af854a3a-2127-422b-91ae-364da2661108 www.bleepingcomputer.com
access.redhat.com/errata/RHSA-2025:9320 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:9324 [email protected] access.redhat.com
lists.debian.org/debian-lts-announce/2025/06/msg00018.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
access.redhat.com/errata/RHSA-2025:9327 [email protected] access.redhat.com
www.openwall.com/lists/oss-security/2025/06/18/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
access.redhat.com/errata/RHSA-2025:9321 [email protected] access.redhat.com
www.openwall.com/lists/oss-security/2025/06/17/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
www.openwall.com/lists/oss-security/2025/06/17/6 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
access.redhat.com/errata/RHSA-2025:10796 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:9322 [email protected] access.redhat.com
news.ycombinator.com/item af854a3a-2127-422b-91ae-364da2661108 news.ycombinator.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2025-06-03T15:58:30.591ZReported to Red Hat.
CNA2025-06-17T00:00:00.000ZMade public.

Workarounds

CNA: Currently, no mitigation is available for this vulnerability.

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