net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register
Summary
GSD-2022-1003721: net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register. Affects Kernel versions >= a3c53be55c955b7150cda17874c3fcb4eeb97a89, < a101793994c0a14c70bb4e44c7fda597eeebba0a. No fix is published. How to fix ↓
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Background
The vulnerability affects the Kernel package in the Linux ecosystem. The Kernel package is responsible for managing the core functionality of the operating system. It provides essential services and interfaces for hardware, software, and user applications. The specific vulnerability in the package is related to the dsa subsystem and the mv88e6xxx driver. The mv88e6xxx_mdios_register function in the driver has a refcount leak issue, which can lead to a resource leak and potential memory corruption.
Vulnerability Detail
The vulnerability arises from a refcount leak in the mv88e6xxx_mdios_register function of the mv88e6xxx driver in the dsa subsystem. This issue can be exploited by an attacker to cause a resource leak and potentially corrupt memory. The vulnerability was introduced in version v4.11 of the Linux Kernel and has been fixed in version v5.4.198. 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
There is no specific workaround mentioned for this vulnerability.
Conclusion
The net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register vulnerability in the Kernel package has been described. It is crucial to update the Linux Kernel to version v5.4.198 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it has the potential to cause resource leaks and memory corruption, which could be exploited by attackers.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. It analyzes your manifest file, like package-lock.json, and provides real-time alerts for open-source vulnerabilities.
There is no known exploit for this vulnerability at the moment. However, it is important to apply the recommended fix to mitigate any potential risks.
The remote exploitability of this vulnerability is not yet determined. Further analysis is required to assess the potential remote attack vectors.
The vulnerability specifically affects the Kernel package in the Linux ecosystem. It is recommended to update the Kernel package to the fixed version to address this vulnerability.
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