Out-of-Bounds Memory Access in mlxsw: thermal
Summary
GSD-2021-1002001: mlxsw: thermal: Fix out-of-bounds memory accesses. Affects Kernel versions >= a50c1e35650b929500bd89be61c89d95a267ce56, < ae0993739e14a102d506aa09e11b0065f3144f10. No fix is published. How to fix ↓
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Background
The mlxsw: thermal vulnerability affects the Kernel package in the Linux ecosystem. The Kernel package is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. The mlxsw: thermal module within the Kernel is responsible for managing thermal information for Mellanox Switch ASICs. This vulnerability allows for out-of-bounds memory accesses, which can lead to potential security risks.
Vulnerability Detail
The mlxsw: thermal vulnerability arises from out-of-bounds memory accesses. This means that the module can access memory beyond the allocated boundaries, potentially leading to memory corruption, crashes, or even remote code execution. The vulnerability was introduced in version v4.10 of the Linux Kernel and was fixed in version v5.4.155. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
To fix the mlxsw: thermal vulnerability, it is recommended to update the Linux Kernel to version v5.4.155 or later. This can be done by pulling the latest updates from the official Linux Kernel repository. The fix for this vulnerability was implemented in commit ae0993739e14a102d506aa09e11b0065f3144f10.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The mlxsw: thermal vulnerability in the Kernel package can lead to out-of-bounds memory accesses, potentially resulting in memory corruption, crashes, or remote code execution. It is crucial to update the Linux Kernel to version v5.4.155 or later to mitigate this vulnerability. Additional security measures can be considered if immediate updating is not possible. For more information and support on vulnerability remediation, contact DevNack.com.
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FAQ
The impact of the mlxsw: thermal vulnerability is not yet proven. However, potential consequences could include memory corruption, crashes, or remote code execution.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
The recommended approach is to update the Kernel to the fixed version. However, if updating is not feasible, you can consider implementing additional security measures, such as network segmentation and access controls, to reduce the risk of exploitation.
There are no known exploits for this vulnerability at the moment. However, it is important to stay updated with security advisories and apply patches promptly to mitigate potential risks.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry with ID GSD-2021-1002001. For further support on vulnerability remediation, you can contact info@devnack.com.
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