CVE-2025-6019
Libblockdev: lpe from allow_active to root in libblockdev via udisks
- Published
- Jun 19, 2025
- Updated
- Jun 30, 2026
- Assigning CNA
- redhat
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 39.1%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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.
Sources
Exploit Chain of CVE-2025-6018 to CVE-2025-6019
- CVE-2025-6019-exploitExploit
exploit
- CVE-2025-6018-6019Exploit
CVE-2025-6018 CVE-2025-6019 PoC Exploit - Local Privilege Escalation in openSUSE/SUSE Linux Enterprise 15 - PAM bypass + udisks2 XFS race condition LPE to root
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