CVE-2026-7867 Udisks2: udisks2: local privilege escalation via as-user option spoofing

High 7.8 Published 6 Aug 2026 Updated 8 Sep 2026

Local attackers can spoof the as-user parameter in udisks2 to mount filesystems for privileged users, leading to local privilege escalation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-7867?

CVE-2026-7867 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 6 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

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.

Weakness: CWE-863

Which versions are affected by CVE-2026-7867?

Linux distribution packages (36)

`libudisks2` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`libudisks2-devel` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`udisks2` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`udisks2-iscsi` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`udisks2-lsm` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`udisks2-lvm2` AlmaLinux:10	All versions	`2.11.0-2.el10_2.1.alma.2`
`libudisks2` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`libudisks2-debuginfo` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`libudisks2-devel` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-debuginfo` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-debugsource` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-iscsi` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-iscsi-debuginfo` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-lsm` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-lsm-debuginfo` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-lvm2` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`udisks2-lvm2-debuginfo` Red Hat:enterprise_linux:10.2	All versions	`0:2.11.0-2.el10_2.1`
`libudisks2` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`libudisks2-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`libudisks2-devel` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-debugsource` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-iscsi` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-iscsi-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-lsm` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-lsm-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-lvm2` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2-lvm2-debuginfo` Red Hat:enterprise_linux_eus:10.0	All versions	`0:2.10.90-5.el10_0.3`
`udisks2` Rocky Linux:10	All versions	`0:2.11.0-2.el10_2.1`
`udisks2` SUSE:Linux Enterprise Server 16.0	All versions	`2.10.1-160000.4.1`
`udisks2` SUSE:Linux Enterprise Server for SAP applications 16.0	All versions	`2.10.1-160000.4.1`
`udisks2` SUSE:Linux Micro 6.2	All versions	`2.10.1-160000.4.1`
`udisks2` openSUSE:Leap 16.0	All versions	`2.10.1-160000.4.1`
`udisks2` openSUSE:Tumbleweed	All versions	`2.11.2-1.1`

How do I fix CVE-2026-7867?

Apply the vendor's patch.

Is CVE-2026-7867 being exploited?

There is no known exploitation of CVE-2026-7867 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as ALSA-2026:53435, DEBIAN-CVE-2026-7867, GHSA-j42g-v9jw-6ph3, MGASA-2026-0453, OESA-2026-3460, OESA-2026-3461 and 10 more.