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Fencer Vulns
high 7.8

CVE-2026-7867 json

Udisks2: udisks2: local privilege escalation via as-user option spoofing

published 2026-08-06 3 mo ago modified 2026-11-05 4 d ago also EUVD-2026-54277

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

A flaw was found in udisks2. A local attacker with an active console session can exploit insufficient authorization checking on the 'as-user' option in the org.freedesktop.UDisks2.Filesystem.Mount() D-Bus method. This allows the attacker to spoof the 'as-user' parameter, mounting filesystems on behalf of arbitrary users, including privileged accounts. This can lead to local privilege escalation through mount point injection and manipulation of the mount namespace visible to privileged users.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:2.11.0-2.el10_2.1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.10.90-5.el10_0.3
  • udisks2 Debian 13 2.10.1-12.1+deb13u2
  • udisks2 Debian 14 2.11.2-1

debian advisories DEBIAN-CVE-2026-7867

  • udisks2 Ubuntu 24.04 LTS 2.10.1-6ubuntu1.5
  • udisks2 Ubuntu 26.04 LTS 2.10.91-1ubuntu2.1

ubuntu advisories UBUNTU-CVE-2026-7867

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • udisks2 RHEL 10.2 2.11.0-2.el10_2.1
  • libudisks2 RHEL 10.2 2.11.0-2.el10_2.1
  • udisks2-lsm RHEL 10.2 2.11.0-2.el10_2.1
  • udisks2-lvm2 RHEL 10.2 2.11.0-2.el10_2.1
  • udisks2-iscsi RHEL 10.2 2.11.0-2.el10_2.1
  • udisks2 enterprise linux eus 10.0 2.10.90-5.el10_0.3
  • libudisks2 enterprise linux eus 10.0 2.10.90-5.el10_0.3
  • udisks2-lsm enterprise linux eus 10.0 2.10.90-5.el10_0.3

red hat advisories RHSA-2026:64798RHSA-2026:53435

  • udisks2 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.10.1-160000.4.1

suse advisories SUSE-SU-2026:23405-1SUSE-SU-2026:23575-1

  • udisks2 openSUSE Leap 16.0 2.10.1-160000.4.1
  • udisks2 openSUSE Tumbleweed 2.11.2-1.1

opensuse advisories openSUSE-SU-2026:21704-1openSUSE-SU-2026:11501-1

  • udisks2 AlmaLinux 10 2.11.0-2.el10_2.1.alma.2
  • libudisks2 AlmaLinux 10 2.11.0-2.el10_2.1.alma.2
  • udisks2-lsm AlmaLinux 10 2.11.0-2.el10_2.1.alma.2
  • udisks2-lvm2 AlmaLinux 10 2.11.0-2.el10_2.1.alma.2
  • udisks2-iscsi AlmaLinux 10 2.11.0-2.el10_2.1.alma.2

almalinux advisories ALSA-2026:53435

  • udisks2 Rocky Linux 10 2.11.0-2.el10_2.1

rocky linux advisories RLSA-2026:53435

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-2026-7867 updated cvss 7.8

udisks2: udisks2: Local Privilege Escalation via as-user option spoofing

  • Red Hat Enterprise Linux AppStream (v. 10) udisks2 2.11.0-2.el10_2.1, libudisks2 2.11.0-2.el10_2.1, udisks2-lsm 2.11.0-2.el10_2.1, udisks2-lvm2 2.11.0-2.el10_2.1, udisks2-iscsi 2.11.0-2.el10_2.1
    fixed: vendor fix RHSA-2026:53435
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) udisks2 2.10.90-5.el10_0.3, libudisks2 2.10.90-5.el10_0.3, udisks2-lsm 2.10.90-5.el10_0.3, udisks2-lvm2 2.10.90-5.el10_0.3, udisks2-iscsi 2.10.90-5.el10_0.3
    fixed: vendor fix RHSA-2026:64798
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libudisks2-devel 2.11.0-2.el10_2.1, udisks2-debuginfo 2.11.0-2.el10_2.1, udisks2-debugsource 2.11.0-2.el10_2.1, libudisks2-debuginfo 2.11.0-2.el10_2.1, udisks2-lsm-debuginfo 2.11.0-2.el10_2.1, udisks2-lvm2-debuginfo 2.11.0-2.el10_2.1, +1 more
    fixed: vendor fix RHSA-2026:53435
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libudisks2-devel 2.10.90-5.el10_0.3, udisks2-debuginfo 2.10.90-5.el10_0.3, udisks2-debugsource 2.10.90-5.el10_0.3, libudisks2-debuginfo 2.10.90-5.el10_0.3, udisks2-lsm-debuginfo 2.10.90-5.el10_0.3, udisks2-lvm2-debuginfo 2.10.90-5.el10_0.3, +1 more
    fixed: vendor fix RHSA-2026:64798
  • Red Hat Enterprise Linux 7 udisks2, libudisks2, udisks2-lsm, udisks2-lvm2, udisks2-iscsi Red Hat Enterprise Linux 8 udisks2, libudisks2, udisks2-lsm, udisks2-lvm2, udisks2-iscsi Red Hat Enterprise Linux 9 udisks2, libudisks2, udisks2-lsm, udisks2-lvm2, udisks2-iscsi
    not affected: vulnerable code not present

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
total
Assessed
3 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness

References

Sources

Fencer Vulns 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.