Vulnerability in Kernel Package: tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH
Summary
GSD-2022-1001730: tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH. Affects Kernel versions < aa9c9fd0ef9d83bdca5203fa72ebeadedd2a8400. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system, responsible for managing the system's core functionality. It provides an interface between the hardware and software layers, allowing applications to communicate with the underlying system resources. The tcp module within the Kernel package handles network communication using the Transmission Control Protocol (TCP). This vulnerability specifically affects the tcp module's handling of the inet_listen_hashbucket::lock when the Bottom Half (BH) is disabled.
Vulnerability Detail
The vulnerability arises from the improper acquisition of the inet_listen_hashbucket::lock in the tcp module when the Bottom Half (BH) is disabled. This can lead to potential security risks, although the exact impact and attack plausibility have not been proven yet. The vulnerability has been addressed in the Linux Kernel version v5.15.34 through commit aa9c9fd0ef9d83bdca5203fa72ebeadedd2a8400.
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 v5.15.34 or later. This can be done by following the official update process provided by the Linux distribution being used. Alternatively, users can compile and install the updated Kernel version manually from the source code available at the official Linux Kernel repository.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the Kernel package is vulnerable to a security issue in the tcp module when acquiring the inet_listen_hashbucket::lock with disabled BH. It is crucial to update the Kernel package to version v5.15.34 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it has the potential to introduce security risks in the tcp module of the Kernel package.
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 and the Vulert Playground will provide real-time monitoring and alerts for open-source vulnerabilities.
Yes, the vulnerability has been fixed in the Linux Kernel version v5.15.34 through commit aa9c9fd0ef9d83bdca5203fa72ebeadedd2a8400. It is recommended to update to this version or later to mitigate the vulnerability.
No specific workaround has been mentioned for this vulnerability. It is recommended to update the Kernel package to the fixed version.
You can refer to the vulnerability details in the Open Source Vulnerability format at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1001xxx/GSD-2022-1001730.json for more information.
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