Vulnerability · Published Aug 6, 2026 · Assigned by redhat
CVE-2026-7867Udisks2: udisks2: local privilege escalation via as-user option spoofing
High 7.8
In plain English
A high-severity incorrect authorization in udisks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | libudisks2 | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| AlmaLinux:10 | libudisks2-devel | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| AlmaLinux:10 | udisks2 | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| AlmaLinux:10 | udisks2-iscsi | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| AlmaLinux:10 | udisks2-lsm | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| AlmaLinux:10 | udisks2-lvm2 | 2.11.0-2.el10_2.1.alma.2 | ALSA-2026:53435 |
| Debian:13 | udisks2 | 2.10.1-12.1+deb13u2 | DEBIAN-CVE-2026-7867 |
| Debian:14 | udisks2 | 2.11.2-1 | DEBIAN-CVE-2026-7867 |
| Rocky Linux:10 | udisks2 | 0:2.11.0-2.el10_2.1 | RLSA-2026:53435 |
| Ubuntu:24.04:LTS | udisks2 | 2.10.1-6ubuntu1.5 | USN-8701-1 |
| Ubuntu:24.04:LTS | udisks2 | 2.10.1-6ubuntu1.5 | UBUNTU-CVE-2026-7867 |
| Ubuntu:26.04:LTS | udisks2 | 2.10.91-1ubuntu2.1 | UBUNTU-CVE-2026-7867 |
| Ubuntu:26.04:LTS | udisks2 | 2.10.91-1ubuntu2.1 | USN-8701-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| udisks | 2.10.0 – before 2.11.2 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- RHSA-2026:53435 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:64798 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-7867 vdb-entry, x_refsource_REDHAT
- RHBZ#2466747 issue-tracking, x_refsource_REDHAT
- https://github.com/storaged-project/udisks/releases/tag/udisks-2.11.2
- https://github.com/storaged-project/udisks/security/advisories/GHSA-j42g-v9jw-6ph3