Vulnerability in Kernel Package: tcp_mtup_probe_success vs wrong snd_cwnd
Summary
GSD-2022-1003841: tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd. Affects Kernel versions >= 5d424d5a674f782d0659a3b66d951f412901faee, < f2845e1504a3bc4f3381394f057e8b63cb5f3f7a. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system, responsible for managing core system functions and providing an interface between hardware and software. It includes various subsystems, such as networking, file systems, and device drivers. The vulnerability in question affects the TCP (Transmission Control Protocol) subsystem of the Kernel package.
Vulnerability Detail
The vulnerability arises from a flaw in the tcp_mtup_probe_success function, which leads to an incorrect value being assigned to the snd_cwnd (sender congestion window) variable. This issue was introduced in version v2.6.17 of the Kernel package and has been present until version v4.19.247. The impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, it could potentially result in network instability, performance degradation, or even denial-of-service conditions.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in the Kernel package, specifically in the tcp_mtup_probe_success function, could potentially lead to network instability, performance degradation, or denial-of-service conditions. It is crucial to update the Kernel package to version v4.19.247 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
If exploited, this vulnerability could lead to network instability, performance degradation, or denial-of-service conditions.
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 it will provide real-time monitoring and alerts for open-source vulnerabilities.
At the time of this report, no known exploit has been documented for this vulnerability.
The recommended mitigation is to update the Kernel package to the fixed version mentioned in the 'how_to_fix' section.
You can find more details about this vulnerability in the official Linux Kernel Git repository. The vulnerability ID is GSD-2022-1003841.
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