Data Race Vulnerability in Linux Kernel
Summary
GSD-2022-1004529: tcp: Fix a data-race around sysctl_tcp_notsent_lowat. Affects Kernel versions >= c9bee3b7fdecb0c1d070c7b54113b3bdfb9a3d36, < fd6f1284e380c377932186042ff0b5c987fb2b92. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. It is a critical piece of software that enables the functioning of various devices and services on Linux-based systems. The vulnerability identified in this report pertains to the TCP implementation in the Linux Kernel.
Vulnerability Detail
The vulnerability in the Linux Kernel involves a data race around the sysctl_tcp_notsent_lowat parameter. A data race occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security issues. In this case, the data race can be exploited by malicious actors to manipulate the sysctl_tcp_notsent_lowat value, potentially affecting the behavior and performance of TCP connections. 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
No specific workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, a data race vulnerability has been identified in the Linux Kernel related to the sysctl_tcp_notsent_lowat parameter. This vulnerability has been addressed in the latest version of the Linux Kernel (v5.10.134). Users are strongly recommended to update their Linux Kernel to mitigate the risk associated with this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware.
A data race occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security issues.
This vulnerability can be exploited by malicious actors to manipulate the sysctl_tcp_notsent_lowat value, potentially affecting the behavior and performance of TCP connections.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
To fix this vulnerability, users are advised to update their Linux Kernel to the latest version available.
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