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CVE-2026-7867

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

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Severity

Important

Red Hat Product Security

7.8

CVSS 3.1

Review impact separately from score.

Published · August 6, 2026

Updated · November 5, 2026

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.

Statement

This Important flaw in udisks2 allows a local attacker with an active console session to achieve privilege escalation. By spoofing the 'as-user' option in the D-Bus mount method, an attacker can mount filesystems on behalf of other users, including privileged accounts, leading to mount point injection and manipulation of the mount namespace.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-863 · Incorrect Authorization