Critical Security Update for systemd and Related Packages: CVE-2026-29111
Summary
RHSA-2026:19213: Red Hat Security Advisory: systemd security update. Affects rhel-net-naming-sysattrs versions < 0:252-67.el9_8.2. Fixed in 0:252-67.el9_8.2. How to fix ↓
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Background
systemd is a system and service manager for Linux operating systems, providing a standard process for controlling the startup and management of system services. It is a core component of many Linux distributions, including Red Hat Enterprise Linux (RHEL). The affected packages include systemd, systemd-boot-unsigned, and others, which are essential for system initialization and service management. The vulnerability in these packages could lead to significant security risks, affecting system stability and security.
Vulnerability Detail
The vulnerability identified as CVE-2026-29111 affects multiple packages within the Red Hat Enterprise Linux ecosystem, particularly systemd and its related components. This vulnerability arises from improper handling of certain system calls, which could allow an attacker to execute arbitrary code with elevated privileges. The ramifications of this vulnerability are severe, as it could lead to unauthorized access, data breaches, and system compromise. The CVSS score of this vulnerability is 7.8, indicating a high level of risk.
How To Fix
Minimum fixed version
0:252-67.el9_8.2
This is the first release that contains the fix.
sudo dnf update rhel-net-naming-sysattrsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can limit access to the affected services or disable them until the patch is applied. This can be done by stopping the services using the following commands:
sudo systemctl stop systemd-boot-unsigned
sudo systemctl stop systemd-container
However, this is not a permanent solution, and it is highly recommended to apply the patch as soon as possible.
Conclusion
The vulnerability CVE-2026-29111 poses a significant risk to systems running affected versions of systemd and related packages. It is crucial to apply the provided patch to mitigate potential security threats. Users should also consider utilizing tools like Vulert to monitor for vulnerabilities in their applications.
See every vulnerability recorded for rhel-net-naming-sysattrs →
FAQ
CVE-2026-29111 is a security vulnerability affecting systemd and related packages in Red Hat Enterprise Linux, which could allow attackers to execute arbitrary code.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
If you cannot update the packages immediately, consider stopping the affected services as a temporary workaround until the patch can be applied.
The CVSS score of this vulnerability is 7.8, indicating a high level of risk.
Vulert is a service that monitors and alerts for open-source vulnerabilities in software using a manifest file like package-lock.json. More information can be found at https://vulert.com.
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