Kernel Security Vulnerability in AlmaLinux: Moderate Risk of Denial of Service
Summary
ALSA-2026:3275: Moderate: kernel security update. Affects kernel versions < 6.12.0-124.39.1.el10_1. Fixed in 6.12.0-124.39.1.el10_1. How to fix ↓
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Background
The kernel is the core component of any Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. AlmaLinux, a community-driven enterprise-grade Linux distribution, relies on the kernel for stability and performance. This vulnerability affects various kernel packages in AlmaLinux 10, potentially compromising system integrity and availability.
Vulnerability Detail
This vulnerability arises from a double free issue in the exFAT filesystem, which can lead to a denial of service. Additionally, there are potential double free scenarios in the DRM scheduler and a use-after-free condition in the mlxsw subsystem. These vulnerabilities can be exploited by attackers to crash the system or execute arbitrary code, posing significant security risks.
How To Fix
Minimum fixed version
6.12.0-124.39.1.el10_1
This is the first release that contains the fix.
sudo dnf update kernelTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider disabling the exFAT filesystem support temporarily until the system can be updated. This can be done by modifying the kernel parameters or removing the exFAT module from the kernel.
Conclusion
The kernel security vulnerabilities in AlmaLinux pose a moderate risk that can lead to denial of service and potential exploitation. It is crucial to update the affected packages to the latest patched version to mitigate these risks. Utilizing tools like Vulert can enhance your security posture by providing ongoing monitoring for vulnerabilities.
See every vulnerability recorded for kernel →
FAQ
The vulnerabilities include double free issues and a use-after-free condition that can lead to denial of service or arbitrary code execution.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software by simply uploading your manifest file.
Failure to address this vulnerability may result in system crashes, data loss, or unauthorized access to system resources.
Yes, you can set up a cron job to regularly check for updates and apply them automatically to ensure your system remains secure.
Vulert provides real-time monitoring and alerts for open-source vulnerabilities using a manifest file, allowing you to quickly identify if your application is affected.
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