Skip to content
Fencer Intel
low 3.3

CVE-2026-111581 json

Libblockdev: libblockdev: argument injection in ntfs/vfat label-setting helpers via udisks2 setlabel() d-bus method

published 24d ago modified 3d ago also EUVD-2026-102935

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

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.

Patch / fix

  • libblockdev openSUSE Tumbleweed 3.5.0-2.1

opensuse advisories openSUSE-SU-2026:12462-1

Is CVE-2026-111581 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-111581 updated cvss 3.3

libblockdev: libblockdev: argument injection in NTFS/VFAT label-setting helpers via udisks2 SetLabel() D-Bus method

  • Red Hat Enterprise Linux 7 libblockdev, libblockdev-dm, libblockdev-fs, libblockdev-kbd, libblockdev-lvm, libblockdev-vdo, +13 more Red Hat Enterprise Linux 8 libblockdev, libblockdev-dm, libblockdev-fs, libblockdev-kbd, libblockdev-lvm, libblockdev-vdo, +13 more Red Hat Enterprise Linux 9 libblockdev, libblockdev-dm, libblockdev-fs, libblockdev-kbd, libblockdev-lvm, libblockdev-loop, +14 more Red Hat Enterprise Linux 10 libblockdev 3.4.0-3.el10
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
24d ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.