Deadlock Prevention in Linux Kernel's mlx5e Package: CVE-2024-27014
Summary
CVE-2024-27014: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Prevent deadlock while disabling aRFS When disabling aRFS under the priv->state_lock, any scheduled aRFS works are canceled using the cancel_... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, providing essential services for hardware and software interaction. The mlx5e package is a driver for Mellanox Ethernet devices, enabling high-performance networking capabilities. This package is crucial for managing network interfaces and ensuring efficient data transmission. However, it is susceptible to a vulnerability that can lead to deadlock situations when disabling aRFS (Adaptive Receive Flow Steering).
Vulnerability Detail
CVE-2024-27014 is a vulnerability in the Linux kernel's mlx5e driver that arises when disabling aRFS while holding the state_lock. The cancel_work_sync function is used to cancel scheduled aRFS work, but it can lead to a deadlock. This occurs because the work handler attempts to acquire the state_lock, which is already held by the task that called cancel_work_sync. The vulnerability can cause the system to hang, impacting network performance and stability.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds provided for this vulnerability. It is recommended to apply the patch as soon as it is available to prevent potential deadlocks.
Conclusion
CVE-2024-27014 is a significant vulnerability in the Linux kernel's mlx5e driver that can lead to deadlocks, affecting network performance. It is essential to update your kernel to the latest version to mitigate this risk. Regular monitoring using tools like Vulert can help ensure your system remains secure.
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FAQ
CVE-2024-27014 is a vulnerability in the Linux kernel's mlx5e driver that can lead to deadlock situations when disabling aRFS.
This vulnerability can cause your system to hang, particularly affecting network performance and stability.
The vulnerability affects various versions of the Linux kernel, specifically those using the mlx5e driver. Ensure you are running updated versions to avoid issues.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risk of deadlocks.
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