CVE-2025-3931

yggdrasil: A flaw was found in Yggdrasil, which acts as a system broker, allowing the processes to communicate to other children...

CVE-2025-3931 is fixed in 2 products on 1 platform, first by RHSA-2025:7592, released May 14, 2025. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile

A flaw was found in Yggdrasil, which acts as a system broker, allowing the processes to communicate to other children's "worker" processes through the DBus component. Yggdrasil creates a DBus method to dispatch messages to workers. However, it misses authentication and authorization checks, allowing every system user to call it. One available Yggdrasil worker acts as a package manager with capabilities to create and enable new repositories and install or remove packages. This flaw allows an attacker with access to the system to leverage the lack of authentication on the dispatch message to force the Yggdrasil worker to install arbitrary RPM packages. This issue results in local privilege escalation, enabling the attacker to access and modify sensitive system data.

Where it's fixed

ProductFixed inFixReleased
Linux
yggdrasil · RHEL 10 0.4.5-3.el10_0 RHSA-2025:7592 May 14, 2025
yggdrasil · almalinux 10 0.4.5-3.el10_0 ALSA-2025:7592 May 14, 2025
yggdrasil · ol 10 0:0.4.5-3.el10_0 ELSA-2025-7592 Jun 27, 2025
yggdrasil · rocky 10 0:0.4.5-3.el10_0 RLSA-2025:7592 Oct 3, 2025
yggdrasil-devel · almalinux 10 0.4.5-3.el10_0 ALSA-2025:7592 May 14, 2025
yggdrasil-devel · ol 10 0:0.4.5-3.el10_0 ELSA-2025-7592 Jun 27, 2025

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