Incorrect Locking in nvmet-tcp State Change Callback
Summary
UVI-2021-1000369: nvmet-tcp: fix incorrect locking in state_change sk callback. Affects Kernel versions >= 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < 60ade0d56b06537a28884745059b3801c78e03bc. No fix is published. How to fix ↓
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Background
The nvmet-tcp package is a component of the Linux Kernel, which is responsible for handling NVMe over TCP transport. It provides the necessary functionality for communication between NVMe devices and hosts over a TCP/IP network. The package allows for efficient and reliable data transfer, ensuring the integrity and security of NVMe commands and responses. However, a vulnerability has been identified in the state_change socket callback function of nvmet-tcp, which can lead to incorrect locking and potential security risks.
Vulnerability Detail
The vulnerability arises from incorrect locking in the state_change socket callback function of nvmet-tcp. This flaw can be exploited by an attacker to manipulate the locking mechanism and potentially gain unauthorized access or cause a denial of service. The vulnerability was introduced in version v5.0 of the Linux Kernel and has been fixed in version v5.10.37. It is important to note that the impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update the Kernel to the recommended version to eliminate the vulnerability.
Conclusion
In conclusion, the nvmet-tcp package in the Linux Kernel is vulnerable to incorrect locking in the state_change socket callback function. This vulnerability can potentially lead to unauthorized access or denial of service. It is crucial to update the Kernel to version v5.10.37 or later to mitigate the vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
nvmet-tcp is a component of the Linux Kernel that enables NVMe over TCP transport, facilitating communication between NVMe devices and hosts over a TCP/IP network.
The impact of this vulnerability is not yet proven. However, it has the potential to allow unauthorized access or cause a denial of service if exploited.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
No, there is no specific workaround available for this vulnerability. Updating the Linux Kernel to the recommended version is the best course of action.
You can find more information about this vulnerability in the Linux Kernel's official repository. The vulnerability is tracked under the ID UVI-2021-1000369.
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