ax25: Fix ax25 session cleanup problems in Kernel
Summary
GSD-2022-1002639: ax25: Fix ax25 session cleanup problems. Affects Kernel versions >= 82e31755e55fbcea6a9dfaae5fe4860ade17cbc0, < ae054931a87ec79ebcf32b78c96e6b4550dab95c. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential services and functions, including device drivers, memory management, process management, and file system access. The ax25 module in the Kernel is responsible for implementing the AX.25 protocol, which is used for packet radio communication. This protocol enables communication between amateur radio operators and supports various applications like APRS (Automatic Packet Reporting System). However, a vulnerability has been discovered in the ax25 module that can lead to session cleanup problems.
Vulnerability Detail
The ax25 module in the Kernel suffers from a vulnerability that affects session cleanup. When a session is terminated, the module fails to properly clean up the associated resources, leading to potential issues. An attacker could exploit this vulnerability to exhaust system resources, causing denial-of-service conditions. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v5.18.4 by commit ae054931a87ec79ebcf32b78c96e6b4550dab95c. The vulnerability was introduced in version v5.18 by commit 82e31755e55fbcea6a9dfaae5fe4860ade17cbc0.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The ax25 module in the Kernel has been found to have a vulnerability related to session cleanup. This vulnerability can potentially lead to denial-of-service conditions. It is crucial to update the Linux Kernel to version v5.18.4 or later to fix this vulnerability. Regularly updating the Kernel is recommended to ensure the application of the latest security patches. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it could potentially lead to denial-of-service conditions by exhausting system resources.
You can use Vulert Playground (https://vulert.com/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 monitoring and alerts for open-source vulnerabilities.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
The remote exploitability of this vulnerability has not been determined yet. Further analysis is required to assess the potential for remote exploitation.
There are no known instances of this vulnerability being exploited in the wild. However, it is always important to apply security patches and updates to mitigate potential risks.
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