CVE-2025-6019

CVE-2025-6019 · Libblockdev: lpe from allow_active to root in libblockdev via udisks

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This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 7.0 · High · EPSS 0.5% · Public exploit · Fix available

Published

2025-06-19T11:55:57.380Z

Updated

2026-06-30T11:10:04.975Z

Stack: system

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