Critical Vulnerability in systemd: Arbitrary Code Execution Risk
Summary
RLSA-2026:13651: Moderate: systemd security update. Affects systemd versions < 0:257-13.el10_1.3.rocky.0.1. Fixed in 0:257-13.el10_1.3.rocky.0.1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
systemd is a system and service manager for Linux that is compatible with SysV and LSB init scripts. It provides aggressive parallelism capabilities, socket and D-Bus activation for starting services, on-demand daemon starting, and process tracking using Linux cgroups. systemd also supports snapshotting and restoring system states, maintaining mount points, and implements a transactional dependency-based service control logic. This makes it a crucial component in modern Linux distributions, including Rocky Linux.
Vulnerability Detail
The vulnerability identified as CVE-2026-29111 allows for arbitrary code execution or denial of service through spurious IPC API call data. This issue arises from improper handling of inter-process communication, which could be exploited by an attacker to execute arbitrary code on the affected system or cause a denial of service, impacting system stability and security.
How To Fix
Minimum fixed version
0:257-13.el10_1.3.rocky.0.1
This is the first release that contains the fix.
sudo dnf update systemdTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider limiting access to the IPC API or implementing firewall rules to restrict unauthorized access until the systemd package can be updated.
Conclusion
The vulnerability in systemd, identified as CVE-2026-29111, poses a significant risk of arbitrary code execution or denial of service. It is crucial to update the systemd package to the latest patched version to mitigate this risk. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
See every vulnerability recorded for systemd →
FAQ
CVE-2026-29111 is a vulnerability in systemd that allows for arbitrary code execution or denial of service through improper handling of IPC API call data.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
The CVSS score for this vulnerability is 7.8, indicating a high level of risk.
If you cannot update the package immediately, consider implementing firewall rules to restrict access to the IPC API as a temporary measure.
The Rocky Enterprise Software Foundation and Red Hat are credited with maintaining and securing the systemd package.
Related vulnerabilities
Recent vulnerabilities recorded for systemd.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
