Data-races in tcp: Fix for sysctl_tcp_fastopen_blackhole_timeout
Summary
GSD-2022-1004342: tcp: Fix data-races around sysctl_tcp_fastopen_blackhole_timeout. Affects Kernel versions >= cf1ef3f0719b4dcb74810ed507e2a2540f9811b4, < a77a75a0e7f397550ab039f96115103e78dd5c69. 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 software to interact with hardware. The specific vulnerability is related to data-races in the tcp module, specifically around the sysctl_tcp_fastopen_blackhole_timeout parameter.
Vulnerability Detail
The vulnerability arises due to data-races in the tcp module related to sysctl_tcp_fastopen_blackhole_timeout. Data-races can lead to unpredictable behavior and potential security issues. Although the impact and attack plausibility have not been proven, it is essential to address this vulnerability to ensure the stability and security of the system. The vulnerability was introduced in Linux Kernel version v4.12 and is fixed in version v5.15.58 by commit a77a75a0e7f397550ab039f96115103e78dd5c69.
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 vulnerability in the tcp module related to sysctl_tcp_fastopen_blackhole_timeout has been identified in the Kernel package. It is crucial to update the Linux Kernel to version v5.15.58 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The Kernel package is the core component of the operating system that manages system resources and provides an interface for software to interact with hardware.
A data-race is a condition that occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security issues.
sysctl_tcp_fastopen_blackhole_timeout is a parameter in the tcp module that controls the timeout for TCP Fast Open connections when a blackhole is detected.
The impact of this vulnerability is not yet proven, but data-races can potentially lead to security issues and unpredictable behavior in the system.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.58 or later.
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