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.
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History
Sat, 17 Oct 2026 00:30:00 +0000
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Fri, 16 Oct 2026 18:30:00 +0000
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Fri, 16 Oct 2026 15:45:00 +0000
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| Description | 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. | |
| Title | Libblockdev: libblockdev: argument injection in ntfs/vfat label-setting helpers via udisks2 setlabel() d-bus method | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-88 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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Redhat
Redhat enterprise Linux |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-10-16T15:42:04.580Z
Updated: 2026-10-16T17:06:09.524Z
Reserved: 2026-10-16T12:59:36.285Z
Link: CVE-2026-111581
Updated: 2026-10-16T16:32:09.529Z
Status : Awaiting Analysis
Published: 2026-10-16T16:17:04.680
Modified: 2026-10-16T19:23:18.623
Link: CVE-2026-111581