{"id":"UBUNTU-CVE-2025-6019","details":"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.","modified":"2026-04-22T16:08:25.852909Z","published":"2025-06-17T16:00:00Z","related":["USN-7577-1","USN-7577-2","USN-7578-1","USN-7578-2"],"upstream":["CVE-2025-6019"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-6019"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-6019"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2025/06/17/4"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7577-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7578-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7577-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7578-2"}],"affected":[{"package":{"name":"libblockdev","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libblockdev@2.16-2ubuntu0.1~esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16-2ubuntu0.1~esm1"}]}],"versions":["2.12-2","2.12-3","2.14-2","2.14-3","2.16-2"],"ecosystem_specific":{"priority_reason":"Allows 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