Out-of-Bounds Memory Access in mlxsw Thermal
Summary
GSD-2021-1002088: mlxsw: thermal: Fix out-of-bounds memory accesses. Affects Kernel versions >= a50c1e35650b929500bd89be61c89d95a267ce56, < df8e58716afb3bee2b59de66b1ba1033f2e26303. No fix is published. How to fix ↓
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Background
The mlxsw package is a component of the Linux Kernel that provides support for Mellanox Switches. It includes drivers and utilities for managing the thermal aspects of these switches. The thermal subsystem is responsible for monitoring and controlling the temperature of various components within the switch. This vulnerability affects versions of the Linux Kernel starting from v4.10.
Vulnerability Detail
The vulnerability in mlxsw's thermal subsystem allows for out-of-bounds memory accesses. This can be exploited by an attacker to read or modify memory beyond the intended boundaries, potentially leading to information disclosure or system compromise. The vulnerability was introduced in version v4.10 of the Linux Kernel and has been fixed in version v5.14.14.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix mentioned above as soon as possible.
Conclusion
The vulnerability in mlxsw's thermal subsystem allows for out-of-bounds memory accesses, which can be exploited by attackers. It is crucial to update the Linux Kernel to version v5.14.14 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
mlxsw is a package in the Linux Kernel that provides support for Mellanox Switches.
The thermal subsystem in mlxsw is responsible for monitoring and controlling the temperature of various components within the switch.
An out-of-bounds memory access occurs when a program reads or writes memory beyond the intended boundaries of a buffer or array.
This vulnerability can lead to information disclosure or system compromise if exploited by an attacker.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for vulnerabilities.
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