CVE-2025-6019: Libblockdev: lpe from allow_active to root in libblockdev via udisks
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 1 public report, the first from .
- How likely is exploitation in the next 30 days?
- 0.5%
EPSS score, percentile 41.4 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 7.0 High
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
- Which versions are affected?
Unaffected 0:3.2.0-4.el10_0; 0:2.18-5.el7_9.1; 0:2.28-7.el8_10; 0:2.19-13.el8_2; 0:2.24-6.el8_4; 0:2.24-9.el8_6; and 7 more
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
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.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
- 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
- RHSA-2025:9878
Workaround (from the CVE record)
Currently, no mitigation is available for this vulnerability.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (13 products)
| Status | Versions |
|---|---|
| Unaffected | 0:3.2.0-4.el10_0 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.18-5.el7_9.1 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.28-7.el8_10 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.19-13.el8_2 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.24-6.el8_4 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.24-9.el8_6 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.24-9.el8_6 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.24-9.el8_6 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.28-3.el8_8 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.28-14.el9_6 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.25-12.el9_0 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.28-5.el9_2 |
Versions not listed are: affected.
| Status | Versions |
|---|---|
| Unaffected | 0:2.28-11.el9_4 |
Versions not listed are: affected.
Versions the record lists as unaffected: 0:3.2.0-4.el10_0, 0:2.18-5.el7_9.1, 0:2.28-7.el8_10, 0:2.19-13.el8_2, 0:2.24-6.el8_4, 0:2.24-9.el8_6, 0:2.28-3.el8_8, 0:2.28-14.el9_6.
Source: CVE List, as of . About the data.
Weakness
CWE-250
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
Known exploited Red Hat vulnerabilities
- CVE-2015-3246: Red Hat Libuser Race Condition Vulnerability
- CVE-2015-5287: Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability
- CVE-2018-14667: Red Hat JBoss RichFaces Framework Expression Language Injection Vulnerability
- CVE-2021-3560: Red Hat Polkit Incorrect Authorization Vulnerability
- CVE-2021-4034: Red Hat Polkit Out-of-Bounds Read and Write Vulnerability