Vulnerability in Kernel Package: tcp_mtup_probe_success vs wrong snd_cwnd
Summary
GSD-2022-1003704: tcp: fix tcp_mtup_probe_success vs wrong snd_cwnd. Affects Kernel versions >= 5d424d5a674f782d0659a3b66d951f412901faee, < 602b338e3c3cd7f935f3f5011882961d074e5ac1. 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, memory management, and device drivers. This vulnerability specifically affects the TCP subsystem within the Kernel package.
Vulnerability Detail
The vulnerability arises from an issue in the tcp_mtup_probe_success function, which incorrectly updates the snd_cwnd (sender congestion window) variable. This can lead to incorrect congestion control behavior, potentially causing performance degradation or enabling denial-of-service attacks. The vulnerability was introduced in version v2.6.17 of the Linux Kernel and has been fixed in version v5.4.198.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel package to version v5.4.198 or later. This can be done by obtaining the updated package from the official Linux Kernel repository and following the installation instructions provided by the distribution or vendor.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, the Kernel package in Linux is vulnerable to a tcp_mtup_probe_success vs wrong snd_cwnd issue, which can result in incorrect congestion control behavior. It is crucial to update to version v5.4.198 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can result in incorrect congestion control behavior, potentially leading to performance degradation or enabling denial-of-service attacks.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time alerts for open-source vulnerabilities, including this one.
At the time of this report, no known exploits for this vulnerability have been disclosed. However, it is important to promptly apply the recommended fix to mitigate any potential risks.
No, only versions starting from v2.6.17 up to v5.4.197 are affected. The vulnerability has been fixed in version v5.4.198.
You can find more information about this vulnerability in the GSD-2022-1003704 entry of the GSD Database maintained by the Cloud Security Alliance. The source link is provided in the vulnerability details section.
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