Data Race Vulnerability in Linux Kernel
Summary
GSD-2022-1004332: tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts. Affects Kernel versions >= 36e31b0af58728071e8023cf8e20c5166b700717, < 404c53ccdebd11f96954f4070cffac8e0b4d5cb6. 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 is widely used in various devices, including servers, desktops, and embedded systems. The vulnerability identified in this report relates to a data race issue in the TCP implementation of the Linux Kernel.
Vulnerability Detail
The data race vulnerability in the Linux Kernel's TCP implementation revolves around a race condition that occurs when accessing the sysctl_tcp_thin_linear_timeouts parameter. This vulnerability can potentially lead to unpredictable behavior and incorrect handling of TCP connections. An attacker could exploit this vulnerability to cause denial-of-service (DoS) conditions or potentially execute arbitrary code with elevated privileges. The vulnerability was introduced in version v2.6.34 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 known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel to a patched version.
Conclusion
The data race vulnerability in the Linux Kernel's TCP implementation can have severe consequences, including denial-of-service conditions and potential code execution with elevated privileges. It is crucial to update the Linux Kernel to version v5.15.58 or later to mitigate 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 vulnerability occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security issues.
The data race vulnerability in the Linux Kernel's TCP implementation can result in denial-of-service (DoS) conditions or potential execution of arbitrary code with elevated privileges.
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 any open-source vulnerabilities, including this data race vulnerability in the Linux Kernel.
For more information about this vulnerability, you can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004332.json).
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