Libblockdev: lpe from allow_active to root in libblockdev via udisks
A 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.
- BDU:2025-07084
- ALSA-2025:9327
- ALSA-2025:9328
- ALSA-2025:9878
- ALSA-2025:A004
- ALSA-2025:A005
- ALSA-2025:A006
- DLA-4221-1
- DSA-5943-1
- openSUSE-SU-2025:15237-1
- RHSA-2025:10796
- RHSA-2025:9320
- RHSA-2025:9321
- RHSA-2025:9322
- RHSA-2025:9323
- RHSA-2025:9324
- RHSA-2025:9325
- RHSA-2025:9326
- RHSA-2025:9327
- RHSA-2025:9328
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Jun 19, 2025
- Updated
- Jun 30, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-250
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · redhat
- 7.0
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.
github.com/storaged-project/libblockdev/ libblockdev
- before 3.3.1affected · semver
Red Hat Red Hat Enterprise Linux 10
- 0:3.2.0-4.el10_0 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
- 0:2.18-5.el7_9.1 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8
- 0:2.28-7.el8_10 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
- 0:2.19-13.el8_2 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- 0:2.24-6.el8_4 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
- 0:2.24-9.el8_6 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
- 0:2.24-9.el8_6 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
- 0:2.24-9.el8_6 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
- 0:2.28-3.el8_8 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 9
- 0:2.28-14.el9_6 and laternot affected · rpm
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
- 0:2.25-12.el9_0 and laternot affected · rpm
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | libblockdev | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-crypto | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-crypto | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-crypto-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-dm | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-dm | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-dm-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-fs | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-fs | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-fs-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-loop | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-loop | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-loop-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-lvm | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-lvm | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-lvm-dbus | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-lvm-dbus | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-lvm-dbus-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-lvm-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-mdraid | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
| AlmaLinux:10 | libblockdev-mdraid | before 3.2.0-4.el10_0 | 3.2.0-4.el10_0 |
| AlmaLinux:10 | libblockdev-mdraid-devel | before 3.2.0-3.el10_0.alma.1 | 3.2.0-3.el10_0.alma.1 |
+96
Same product
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- CVE-2025-4404Freeipa: idm: privilege escalation from host to domain admin in freeipa37Monitor
- CVE-2025-7493Freeipa: idm: privilege escalation from host to domain admin in freeipa36Monitor
- CVE-2025-49796Libxml: type confusion leads to denial of service (dos)36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| github.com/storaged-project/libblockdev/ libblockdev | 3.3.1 | Vendor (CNA) |
| almalinux:libblockdev | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-crypto | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-dm | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-fs | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-kbd | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-loop | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-lvm | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-lvm-dbus | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-mdraid | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-mpath | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-nvdimm | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:libblockdev-nvme | 2.28-14.el9_6 · AlmaLinux:9 | Package registry (OSV) |
| debian:libblockdev | 2.28-2+deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:libblockdev | 2.26-150400.3.5.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| red hat:libblockdev | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-crypto | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-debuginfo | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-fs | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-loop | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-lvm | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-mdraid | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-nvdimm | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-part | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-swap | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:libblockdev-utils | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| red hat:python2-blockdev | 0:2.18-5.el7_9.1 · Red Hat:rhel_els:7 | Package registry (OSV) |
| rocky linux:libblockdev | 0:2.28-14.el9_6 · Rocky Linux:9 | Package registry (OSV) |
| suse:libblockdev | 2.22-150200.3.3.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | Package registry (OSV) |
| suse:libblockdev | 2.26-150400.3.5.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×10
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:70 | 2025-06-19 |
| Proof-of-concept repository on GitHub | stars:4 | 2025-06-20 |
| Proof-of-concept repository on GitHub | stars:3 | 2025-06-29 |
| Proof-of-concept repository on GitHub | stars:0 | 2025-09-03 |
| Proof-of-concept repository on GitHub | stars:0 | 2025-12-11 |
| Proof-of-concept repository on GitHub | stars:0 | 2025-12-14 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-02-09 |
| Proof-of-concept repository on GitHub | stars:1 | 2026-02-10 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-02-13 |
| Proof-of-concept repository on GitHub | stars:3 | 2026-02-13 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoCsame day
- Published
- TodaySep 30, 2026+469 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-12505364 days apartCifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall31Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-250 · Execution with Unnecessary PrivilegesCVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHSA-2025:10796
- access.redhat.com/errata/RHSA-2025:9320
- access.redhat.com/errata/RHSA-2025:9321
- access.redhat.com/errata/RHSA-2025:9322
- access.redhat.com/errata/RHSA-2025:9323
- access.redhat.com/errata/RHSA-2025:9324
- access.redhat.com/errata/RHSA-2025:9325
- access.redhat.com/errata/RHSA-2025:9326
- access.redhat.com/errata/RHSA-2025:9327
- access.redhat.com/errata/RHSA-2025:9328
- access.redhat.com/errata/RHSA-2025:9878
- access.redhat.com/security/cve/CVE-2025-6019
- bugzilla.redhat.com/show_bug.cgi?id=2370051
- cdn2.qualys.com/2025/06/17/suse15-pam-udisks-lpe.txt
- www.openwall.com/lists/oss-security/2025/06/17/5
- www.openwall.com/lists/oss-security/2025/06/17/6
- www.openwall.com/lists/oss-security/2025/06/18/1
- lists.debian.org/debian-lts-announce/2025/06/msg00018.html
- news.ycombinator.com/item?id=44325861
- www.bleepingcomputer.com/news/linux/new-linux-udisks-flaw-lets-attackers-get-root-on-major-linux-distros/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.