Data Race Vulnerability in Linux Kernel
Summary
GSD-2022-1004333: tcp: Fix a data-race around sysctl_tcp_early_retrans. Affects Kernel versions >= eed530b6c67624db3f2cf477bac7c4d005d8f7ba, < 5037ca9e4b169cc9aed0174d658c3d81fdaf8ea5. 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 widely used in various devices, including servers, desktops, and embedded systems. The vulnerability identified in this report relates to the TCP implementation in the Linux Kernel.
Vulnerability Detail
The vulnerability in the Linux Kernel is a data race issue specifically related to the sysctl_tcp_early_retrans functionality. A data race occurs 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 race around sysctl_tcp_early_retrans can result in various consequences, including potential information disclosure or denial of service attacks. The vulnerability was introduced in version v3.5 of the Linux Kernel and has been fixed in version v5.15.58.
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. However, it is highly recommended to update to the fixed version of the Linux Kernel as mentioned in the 'how_to_fix' section.
Conclusion
The data race vulnerability in the Linux Kernel related to sysctl_tcp_early_retrans can have serious security implications. It is crucial to update to the fixed version of the Linux Kernel (v5.15.58 or later) to mitigate the risk. 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 vulnerability occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security vulnerabilities.
sysctl_tcp_early_retrans is a functionality in the Linux Kernel related to TCP (Transmission Control Protocol) that determines the behavior of early retransmission of TCP packets.
The potential consequences of this vulnerability include information disclosure or denial of service attacks.
To fix the vulnerability, it is recommended to update to the latest version of the Linux Kernel (v5.15.58 or later) where the issue has been resolved.
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