Libblockdev: lpe from allow_active to root in libblockdev via udisks
Priority LOW 33CWE-250Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-250.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0048 41st percentileScored 2026-11-07
Fix Fixed libblockdev: 3.3.1Red Hat: 11 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libblockdev | before 3.3.1 | 3.3.1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | 3.2.0-4.el10_0 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | 2.18-5.el7_9.1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.28-7.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | — | 2.19-13.el8_2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | 2.24-6.el8_4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | 2.24-9.el8_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — | 2.24-9.el8_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — | 2.24-9.el8_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | 2.28-3.el8_8 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.28-14.el9_6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — | 2.25-12.el9_0 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | 2.28-5.el9_2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | 2.28-11.el9_4 | Patch available | CNA |
- libblockdev Vendor— Affected before 3.3.1 Fixed in 3.3.1 Patch available CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 3.2.0-4.el10_0 Patch available CNA
- Red Hat Enterprise Linux 7 Extended Lifecycle Support VendorRed Hat Affected — Fixed in 2.18-5.el7_9.1 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.28-7.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8.2 Advanced Update Support VendorRed Hat Affected — Fixed in 2.19-13.el8_2 Patch available CNA
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.24-6.el8_4 Patch available CNA
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 2.24-9.el8_6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Telecommunications Update Service VendorRed Hat Affected — Fixed in 2.24-9.el8_6 Patch available CNA
- Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.24-9.el8_6 Patch available CNA
- Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.28-3.el8_8 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.28-14.el9_6 Patch available CNA
- Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.25-12.el9_0 Patch available CNA
- Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 2.28-5.el9_2 Patch available CNA
- Red Hat Enterprise Linux 9.4 Extended Update Support VendorRed Hat Affected — Fixed in 2.28-11.el9_4 Patch available CNA
CPE names CNA · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/o:redhat:enterprise_linux:10.0 | 10.0 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::appstream | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::crb | 8 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.2::appstream | 8.2 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.4::appstream | 8.4 | — | Red Hat |
| cpe:/a:redhat:rhel_aus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_tus:8.6::appstream | 8.6 | — | Red Hat |
| cpe:/a:redhat:rhel_e4s:8.8::appstream | 8.8 | — | Red Hat |
- cpe:/o:redhat:enterprise_linux:10.0 Versions 10.0 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::crb Versions 8 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.2::appstream Versions 8.2 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.4::appstream Versions 8.4 — ·Red Hat
- cpe:/a:redhat:rhel_aus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_tus:8.6::appstream Versions 8.6 — ·Red Hat
- cpe:/a:redhat:rhel_e4s:8.8::appstream Versions 8.8 — ·Red Hat
Remediation
- Fix · CNA libblockdev Fixed in 3.3.1
Red Hat 11 advisories
- RHSA-2025:10796 Released 2025-07-10 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux Server (v. 7 ELS) libblockdev-2.18-5.el7_9.1, libblockdev-crypto-2.18-5.el7_9.1, libblockdev-fs-2.18-5.el7_9.1 +8
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) libblockdev-btrfs-2.18-5.el7_9.1, libblockdev-btrfs-devel-2.18-5.el7_9.1, libblockdev-crypto-devel-2.18-5.el7_9.1 +21
- RHSA-2025:9878 Released 2025-06-30 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream (v. 8) libblockdev-2.28-7.el8_10, libblockdev-crypto-2.28-7.el8_10, libblockdev-dm-2.28-7.el8_10 +15
- Red Hat Enterprise Linux CRB (v. 8) libblockdev-crypto-devel-2.28-7.el8_10, libblockdev-devel-2.28-7.el8_10, libblockdev-fs-devel-2.28-7.el8_10 +7
- RHSA-2025:9327 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream (v. 9) libblockdev-2.28-14.el9_6, libblockdev-crypto-2.28-14.el9_6, libblockdev-dm-2.28-14.el9_6 +16
Show 8 more Red Hat advisories
- RHSA-2025:9326 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) libblockdev-2.28-11.el9_4, libblockdev-crypto-2.28-11.el9_4, libblockdev-dm-2.28-11.el9_4 +16
- RHSA-2025:9328 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream (v. 10) libblockdev-3.2.0-4.el10_0, libblockdev-crypto-3.2.0-4.el10_0, libblockdev-dm-3.2.0-4.el10_0 +17
- RHSA-2025:9322 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) libblockdev-2.24-9.el8_6, libblockdev-crypto-2.24-9.el8_6, libblockdev-dm-2.24-9.el8_6 +14
- Red Hat Enterprise Linux AppStream E4S (v.8.6) libblockdev-2.24-9.el8_6, libblockdev-crypto-2.24-9.el8_6, libblockdev-dm-2.24-9.el8_6 +15
- Red Hat Enterprise Linux AppStream TUS (v.8.6) libblockdev-2.24-9.el8_6, libblockdev-crypto-2.24-9.el8_6, libblockdev-dm-2.24-9.el8_6 +14
- RHSA-2025:9325 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) libblockdev-2.28-5.el9_2, libblockdev-crypto-2.28-5.el9_2, libblockdev-dm-2.28-5.el9_2 +16
- RHSA-2025:9323 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) libblockdev-2.28-3.el8_8, libblockdev-crypto-2.28-3.el8_8, libblockdev-dm-2.28-3.el8_8 +14
- RHSA-2025:9324 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) libblockdev-2.25-12.el9_0, libblockdev-crypto-2.25-12.el9_0, libblockdev-dm-2.25-12.el9_0 +15
- RHSA-2025:9320 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) libblockdev-2.19-13.el8_2, libblockdev-crypto-2.19-13.el8_2, libblockdev-dm-2.19-13.el8_2 +14
- RHSA-2025:9321 Released 2025-06-23 · Red Hat rating Importantlibblockdev security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) libblockdev-2.24-6.el8_4, libblockdev-crypto-2.24-6.el8_4, libblockdev-dm-2.24-6.el8_4 +14
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2025:9328 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2025:9878 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:9327 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2025:9320 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2025:9321 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2025:9322 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2025:9322 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2025:9323 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2025:9324 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2025:9325 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:9326 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2025:9322 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2025:9878 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2025:10796 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2025:10796 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6019
- 2026-10-03 Alias added: GHSA-mpgj-hch9-5rvx
References
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Sources
- CVE-2025-6019 · CVE Program
- CVE-2025-6019 · NVD
- FIRST EPSS
- GHSA-mpgj-hch9-5rvx · GitHub Advisory Database · CC BY 4.0
- CVE-2025-6019 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences