Data-races in tcp: Fix data-races around sysctl_tcp_max_reordering
Summary
GSD-2022-1004516: tcp: Fix data-races around sysctl_tcp_max_reordering. Affects Kernel versions >= dca145ffaa8d39ea1904491ac81b92b7049372c0, < 064852663308c801861bd54789d81421fa4c2928. No fix is published. How to fix ↓
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Background
The vulnerability affects the Kernel package in the Linux ecosystem. The Kernel is the core component of the operating system that manages system resources and provides an interface for applications to interact with hardware. The specific vulnerability relates to data-races around the sysctl_tcp_max_reordering parameter in the TCP module of the Kernel. Data-races can lead to unpredictable behavior and potential security vulnerabilities.
Vulnerability Detail
The vulnerability arises due to data-races in the sysctl_tcp_max_reordering parameter of the TCP module in the Kernel. Data-races occur when multiple threads or processes access shared data concurrently without proper synchronization. In this case, the vulnerability can result in inconsistent or incorrect values being read or written to the sysctl_tcp_max_reordering parameter. This can potentially lead to performance issues, network instability, or even security vulnerabilities. The vulnerability was introduced in version v3.19 of the Linux Kernel and has been fixed in version v5.10.134.
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. It is recommended to apply the fix by updating the Linux Kernel to the latest version.
Conclusion
The data-races vulnerability in the tcp module of the Linux Kernel, specifically related to the sysctl_tcp_max_reordering parameter, can lead to performance issues, network instability, or potential security vulnerabilities. It is crucial to update the Kernel to version v5.10.134 or later to fix the vulnerability. If updating is not feasible, additional security measures can be implemented to minimize the potential impact. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can result in performance issues, network instability, or potential security vulnerabilities.
You can use the Vulert 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 any open-source vulnerabilities, including this one.
The recommended approach is to update the Kernel to the latest version. However, if updating is not feasible, you can consider implementing additional security measures, such as network segmentation or access controls, to minimize the potential impact of the vulnerability.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004516.json) for more information about this vulnerability, including its timeline and references.
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