Vulnerability in Kernel: rxrpc listen() Function
Summary
GSD-2022-1004066: rxrpc: Fix listen() setting the bar too high for the prealloc rings. Affects Kernel versions >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61, < 61fb38cfbb1d54d3dafd0c25752f684b3cd00b32. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides essential services and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and ensures the security and stability of the system. The rxrpc module within the Kernel is responsible for implementing the Reliable Datagram Protocol (RxRPC), which enables reliable and secure communication between networked applications. However, a vulnerability has been discovered in the listen() function of the rxrpc module, which can potentially lead to security issues.
Vulnerability Detail
The vulnerability in the rxrpc listen() function occurs when it sets the bar too high for the preallocated rings. This can result in various security risks, although the exact impact and attack plausibility have not been proven yet. The vulnerability was introduced in version v4.9 of the Linux Kernel by commit 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 and has been fixed in version v4.9.318 by commit 61fb38cfbb1d54d3dafd0c25752f684b3cd00b32.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the rxrpc listen() function of the Kernel can potentially introduce security risks and compromise the reliability and security of networked applications. It is crucial to update the Linux Kernel to version v4.9.318 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can 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 and compromise the reliability and security of networked applications that rely on the rxrpc module.
You can check if your system is affected by this vulnerability by verifying the version of the Linux Kernel you are using. If your Kernel version is earlier than v4.9.318, it is recommended to update to the latest version to mitigate the vulnerability.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the recommended fix to ensure the security and stability of your system.
There are no known workarounds for this vulnerability. It is recommended to update the Linux Kernel to the latest version to address the issue.
For more information about this vulnerability, you can refer to the source link provided in the database specific section of the vulnerability details: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004066.json
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