CVE-2025-14338

Published Jan 14, 2026

Last updated a month ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-14338 is a vulnerability identified in InputPlumber, a Linux utility designed to combine input devices into virtual ones, commonly used in Linux gaming environments like SteamOS. This flaw primarily stems from inadequate D-Bus authorization mechanisms in InputPlumber versions prior to v0.69.0. Specifically, Polkit authentication was often disabled by default, and even when available as a compile-time option, it was not straightforward to enable. The vulnerability is further compounded by a race condition and the use of the deprecated "unix-process" Polkit subject, which is susceptible to PID replacement attacks. These issues allow local, unprivileged users to bypass authentication and access privileged D-Bus methods. This unauthorized access can be exploited through methods like `CreateCompositeDevice` to perform unauthorized file existence tests, leak sensitive information, or trigger memory exhaustion, and through `CreateTargetDevice` to create virtual keyboard devices and inject arbitrary keystrokes into active user sessions.

Description: Polkit authentication dis isabled by default and a race condition in the Polkit authorization check in versions before v0.69.0 can lead to the same issues as in CVE-2025-66005.
Source: meissner@suse.de
NVD status: Awaiting Analysis

Risk scores

CVSS 4.0

Type: Secondary
Base score: 8.5
Impact score: -
Exploitability score: -
Vector string: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: HIGH

Weaknesses

meissner@suse.de: CWE-284

Hype score: Not currently trending

References