Data-race vulnerability in tcp package of Linux Kernel
Summary
GSD-2022-1004534: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. Affects Kernel versions >= c04b79b6cfd714144f6a2cf359603d82ee631e62, < d5bece4df6090395f891110ef52a6f82d16685db. 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 package within the Linux Kernel is responsible for handling TCP/IP communication protocols. It ensures reliable and ordered delivery of data packets between network devices.
Vulnerability Detail
The identified vulnerability in the tcp package involves a data-race issue specifically related to sysctl_tcp_mtu_probe_floor. A data-race occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unexpected behavior and potential security vulnerabilities. This vulnerability has the potential to be exploited by malicious actors to manipulate or disrupt TCP/IP communication, potentially leading to denial-of-service attacks or unauthorized access to sensitive information.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can consider applying patches or backporting the fix to their current Linux Kernel version. However, it is strongly advised to update to the latest stable version whenever possible, as it ensures comprehensive security improvements and bug fixes.
Conclusion
The data-race vulnerability in the tcp package of the Linux Kernel can be mitigated by updating to the latest stable version (v5.10.134 or later) or applying patches/backporting the fix. It is crucial to prioritize the security of the system by promptly addressing vulnerabilities in the Linux Kernel. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
A data-race vulnerability occurs when multiple threads or processes access shared data concurrently without proper synchronization. This can lead to unexpected behavior and potential security vulnerabilities.
sysctl_tcp_mtu_probe_floor is a parameter in the tcp package of the Linux Kernel that determines the minimum MTU (Maximum Transmission Unit) size for TCP/IP packets during the MTU probing process.
This vulnerability could be exploited by malicious actors to manipulate or disrupt TCP/IP communication, potentially leading to denial-of-service attacks or unauthorized access to sensitive information.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.134 or later, which includes the necessary fix for the data-race issue.
As a workaround, users can consider applying patches or backporting the fix to their current Linux Kernel version. However, updating to the latest stable version is strongly advised for comprehensive security improvements.
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