Vulnerability in Kernel: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink()
Summary
GSD-2022-1000212: rtnetlink: make sure to refresh master_dev/m_ops in __rtnl_newlink(). Affects Kernel versions >= ba7d49b1f0f8e5f24294a880ed576964059af5ef, < 3bbe2019dd12b8d13671ee6cda055d49637b4c39. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and enables the execution of user programs. The rtnetlink subsystem within the Kernel is responsible for handling network-related operations and configurations. This vulnerability specifically affects the rtnetlink subsystem and its function __rtnl_newlink().
Vulnerability Detail
The vulnerability arises from a failure to refresh the master_dev/m_ops in the __rtnl_newlink() function of the rtnetlink subsystem. This oversight can lead to potential security vulnerabilities, although the exact impact and attack plausibility have not been proven. The vulnerability was introduced in version v3.14 of the Linux Kernel by commit ba7d49b1f0f8e5f24294a880ed576964059af5ef and has been fixed in version v5.10.97 by commit 3bbe2019dd12b8d13671ee6cda055d49637b4c39.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No known workarounds are available for this vulnerability.
Conclusion
The vulnerability in the Kernel's rtnetlink subsystem can potentially introduce security vulnerabilities. It is crucial to update the Linux Kernel to version v5.10.97 or later to mitigate this issue. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it has the potential to introduce security vulnerabilities in the rtnetlink subsystem of the Linux Kernel.
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, without requiring access to the code or installation.
No known workarounds are available for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can refer to the vulnerability details provided by the Cloud Security Alliance's GSD database. The source link is available in the database_specific section of this report.
To update the Linux Kernel, you can obtain the latest version from the official Linux Kernel repository and follow the installation instructions provided by the distribution or system administrator.
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