This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-53612 →

UBUNTU-CVE-2026-53612

[Local Privilege Escalation via TOCTOU in mount(8) hook_owner.c chmod/chown]

Original description

The description as published by the source.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Ubuntu:24.04:LTS util-linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.39.3-9ubuntu6.6"}]}]

Ubuntu:25.10 util-linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.10 util-linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS util-linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.41.3-3ubuntu2.2"}]}]