Data Races in tcp: Fix data-races around sysctl_tcp_recovery
Summary
GSD-2022-1004519: tcp: Fix data-races around sysctl_tcp_recovery. Affects Kernel versions >= 4f41b1c58a32537542f14c1150099131613a5e8a, < d8781f7cd04091744f474a2bada74772084b9dc9. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing system resources, including networking capabilities. The tcp module within the Kernel is responsible for handling TCP/IP connections and ensuring reliable data transmission. However, a vulnerability has been identified in the tcp module that involves data races around sysctl_tcp_recovery.
Vulnerability Detail
The vulnerability arises due to data races in the sysctl_tcp_recovery function within the tcp module. Data races occur when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security vulnerabilities. In this case, the data races can result in incorrect handling of TCP recovery, potentially leading to network instability, data corruption, or even remote code execution. The vulnerability was introduced in version v4.4 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
No specific workaround has been mentioned for this vulnerability.
Conclusion
The data races in the sysctl_tcp_recovery function within the tcp module of the Linux Kernel can lead to network instability, data corruption, or remote code execution. It is crucial to update the Kernel to version v5.10.134 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
A data race occurs when multiple threads or processes access shared data concurrently without proper synchronization. This can lead to unpredictable behavior and potential security vulnerabilities.
The tcp module in the Linux Kernel handles TCP/IP connections and ensures reliable data transmission over the network.
The data races in the sysctl_tcp_recovery function can result in incorrect handling of TCP recovery, potentially leading to network instability, data corruption, or even remote code execution.
This vulnerability was introduced in version v4.4 of the Linux Kernel.
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 open-source vulnerabilities, including this one.
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