CVE-2026-111581
A flaw was found in libblockdev. The bd_fs_ntfs_set_label() and bd_fs_vfat_set_label() functions pass caller-supplied label values as bare positional arguments to the ntfslabel and fatlabel utilities without end-of-options separators or input validation for values beginning with a dash. This allows a label starting with '-' to be interpreted as a command-line flag by the spawned tool, potentially bypassing safety checks or causing unintended operations. This is reachable by unprivileged local users through the udisks2 Filesystem.SetLabel() D-Bus method without administrator authentication.
- Score
- CVSS 3.1 3.3 Low
- Status
- Awaiting Analysis - secalert@redhat.com
- Published
- 2026-10-16
- Last modified
- 2026-10-16
- Weaknesses
- CWE-88
Affected products
References
- https://access.redhat.com/security/cve/CVE-2026-111581
- https://bugzilla.redhat.com/show_bug.cgi?id=2554104
