Vulnerability in Kernel: tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH
Summary
GSD-2022-1001403: tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH. Affects Kernel versions < b897d79a0658d2a0fe037612bd70ce0eb21741e9. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services for the proper functioning of the system. The tcp module within the Kernel handles network communication using the Transmission Control Protocol (TCP). It manages incoming and outgoing network connections, ensuring reliable and ordered data transmission. However, a vulnerability has been discovered in the tcp module that involves acquiring the inet_listen_hashbucket::lock with disabled BH, which can lead to potential security risks.
Vulnerability Detail
The vulnerability arises from acquiring the inet_listen_hashbucket::lock with disabled BH in the tcp module. When this lock is acquired without proper handling of disabled bottom halves (BH), it can result in security vulnerabilities. The exact impact and attack plausibility of this vulnerability have not been proven yet. However, it is crucial to address this issue to prevent potential security breaches. The vulnerability has been fixed in Linux Kernel version v5.16.20 by commit b897d79a0658d2a0fe037612bd70ce0eb21741e9.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
In conclusion, a vulnerability has been identified in the tcp module of the Kernel, which involves acquiring the inet_listen_hashbucket::lock with disabled BH. This vulnerability can potentially lead to security risks. It is crucial to update the Linux Kernel to version v5.16.20 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software.
The tcp module in the Kernel handles network communication using the Transmission Control Protocol (TCP). It manages incoming and outgoing network connections, ensuring reliable and ordered data transmission.
The exact impact of this vulnerability has not been proven yet. However, it has the potential to introduce security risks and may be exploited by malicious actors.
To fix this vulnerability, update the Linux Kernel to version v5.16.20 or later.
There is no specific workaround mentioned for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
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