Moderate Vulnerability in kernel-rt Package: IPC ID Allocation Issue
Summary
ALSA-2026:49851: Moderate: kernel-rt security, bug fix, and enhancement update. Affects kernel-rt versions < 4.18.0-553.151.1.rt7.492.el8_10. Fixed in 4.18.0-553.151.1.rt7.492.el8_10. How to fix ↓
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Background
The kernel-rt package provides the Real Time Linux Kernel, designed for systems requiring high determinism. It enables fine-tuning of system performance for real-time applications, making it critical for environments where timing is essential. This package is widely used in various applications, including embedded systems and high-performance computing.
Vulnerability Detail
The vulnerability identified as CVE-2026-52923 pertains to the kernel's inter-process communication (IPC) mechanism. It allows for the allocation of next_id values outside the valid ID range, potentially leading to unauthorized access or manipulation of IPC resources. This could result in system instability or exploitation by malicious actors, affecting the overall security and reliability of the system.
How To Fix
Minimum fixed version
4.18.0-553.151.1.rt7.492.el8_10
This is the first release that contains the fix.
sudo dnf update kernel-rtTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, no specific workarounds are mentioned for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
The kernel-rt package has a moderate vulnerability (CVE-2026-52923) that affects its IPC mechanism. It is crucial to update to the patched version to mitigate potential security risks. Regular monitoring and updates are essential for maintaining system integrity.
See every vulnerability recorded for kernel-rt →
FAQ
CVE-2026-52923 is a vulnerability in the kernel-rt package related to improper allocation of IPC next_id values, which can lead to security issues.
You can use the Vulert platform to check if your application is affected by this vulnerability. Simply upload your manifest file like package-lock.json to monitor and alert for vulnerabilities.
The vulnerability can lead to unauthorized access to IPC resources, potentially causing system instability or exploitation by attackers.
Yes, a patch is available in the version 4.18.0-553.151.1.rt7.492.el8_10 of the kernel-rt package.
You can apply the patch by updating the kernel-rt package using the command: 'sudo dnf update kernel-rt'. Remember to reboot your system afterward.
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