Linux Kernel Vulnerability: Uninitialized Command Queue Entry Result in NVMe over RDMA
Summary
CVE-2024-41079: In the Linux kernel, the following vulnerability has been resolved: nvmet: always initialize cqe.result The spec doesn't mandate that the first two double words (aka results) for the command queue entry need to be set to... 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 a core component of many operating systems, providing essential functionalities such as process management, memory management, and hardware abstraction. It supports various protocols, including NVMe (Non-Volatile Memory Express), which is crucial for high-speed storage access. This vulnerability specifically affects the NVMe over RDMA (Remote Direct Memory Access) implementation, where the command queue entry result was not properly initialized, potentially leading to data leakage.
Vulnerability Detail
In the Linux kernel, specifically within the NVMe over RDMA implementation, a vulnerability was identified where the command queue entry result was not initialized. The specification does not require that the first two double words of the command queue entry be set to zero when unused. While the TCP and FC implementations return zero, the RDMA implementation did not. This inconsistency could lead to the leakage of sensitive data from the stack, posing a security risk.
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. The best course of action is to apply the necessary updates as soon as they are available.
Conclusion
The vulnerability CVE-2024-41079 in the Linux kernel highlights a critical issue with uninitialized command queue entries in the NVMe over RDMA implementation. Users are urged to update their systems to mitigate the risks associated with potential data leakage. Utilizing tools like Vulert can help in monitoring and addressing such vulnerabilities effectively.
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FAQ
CVE-2024-41079 is a vulnerability in the Linux kernel related to uninitialized command queue entries in the NVMe over RDMA implementation, which can lead to data leakage.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By using the Vulert playground, you can check if your application is affected without any signup.
The primary risk is the potential leakage of sensitive data from the stack, which could be exploited by malicious actors.
You can update your Linux kernel using the package manager with commands like 'sudo apt update' followed by 'sudo apt upgrade linux'.
Yes, for Debian 12, upgrade to version 6.1.106-1 or later, and for Debian 13, upgrade to version 6.9.11-1 or later.
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