Vulnerability in Linux Kernel: tcp_rtx_synack() can be called from process context
Summary
GSD-2022-1002971: tcp: tcp_rtx_synack() can be called from process context. Affects Kernel versions >= 168a8f58059a22feb9e9a2dcc1b8053dbbbc12ef, < bdc28a8fb43cc476e33b11519235adb816ce00e8. 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 essential services to applications. It is a critical piece of software that enables the functioning of various hardware devices and software components. The tcp_rtx_synack() function in the TCP implementation of the Linux Kernel is susceptible to being called from process context, which can lead to potential security vulnerabilities.
Vulnerability Detail
The tcp_rtx_synack() function in the Linux Kernel's TCP implementation can be called from process context, which introduces a potential security vulnerability. This vulnerability was introduced in version v3.7 of the Linux Kernel and has been fixed in version v5.17.15. The impact and attack plausibility of this vulnerability have not been proven yet. However, if successfully exploited, it could potentially allow an attacker to execute arbitrary code or perform other malicious activities within the context of the affected process. Further technical details and references can be found in the provided sources.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update the Kernel to the patched version to eliminate the risk of exploitation.
Conclusion
In conclusion, the tcp_rtx_synack() function in the Linux Kernel's TCP implementation can be called from process context, potentially leading to security vulnerabilities. It is crucial to update the Linux Kernel to version v5.17.15 or later to mitigate the risks 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 essential services to applications.
The tcp_rtx_synack() function is part of the TCP implementation in the Linux Kernel. It handles retransmission of SYN-ACK packets in TCP connections.
The exact impact and attack plausibility of this vulnerability have not been proven yet. However, if successfully exploited, it could potentially allow an attacker to execute arbitrary code or perform other malicious activities within the context of the affected process.
Yes, this vulnerability has been fixed in version v5.17.15 of the Linux Kernel.
More technical details and references can be found in the provided sources, including the GitHub repository and the Vulert Playground.
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