Improper Fix in ax25 Package Leads to UAF and NPD Bugs
Summary
GSD-2022-1000297: ax25: improve the incomplete fix to avoid UAF and NPD bugs. Affects Kernel versions < 851901d339b2ba766ffcf754d37a6f52fa07cea2. No fix is published. How to fix ↓
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Background
The ax25 package is a component of the Linux Kernel, which is responsible for implementing the AX.25 protocol. This protocol is used for packet radio networks and enables communication between amateur radio operators. The ax25 package provides the necessary functionality for transmitting and receiving data over AX.25 networks. However, a vulnerability has been discovered in the ax25 package that could lead to use-after-free (UAF) and null pointer dereference (NPD) bugs.
Vulnerability Detail
The vulnerability in the ax25 package is a result of an incomplete fix. It allows an attacker to exploit use-after-free and null pointer dereference bugs, potentially leading to arbitrary code execution or a denial of service (DoS) condition. The vulnerability originates from improper memory management in the ax25 package, which can be triggered by a specially crafted network packet. Successful exploitation of this vulnerability could have severe consequences, including unauthorized access to sensitive information or the compromise of the affected system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the latest version to address the issue effectively.
Conclusion
The ax25 package in the Linux Kernel is vulnerable to use-after-free and null pointer dereference bugs. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v4.9.303 or later. Failure to address this vulnerability could result in unauthorized access to sensitive information or the compromise of the affected system. For further assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The ax25 package is a component of the Linux Kernel that implements the AX.25 protocol for packet radio networks.
This vulnerability could potentially lead to arbitrary code execution or a denial of service (DoS) condition.
To fix this vulnerability, update the Linux Kernel to version v4.9.303 or later.
No, there is no known workaround for this vulnerability. Updating the Linux Kernel is the recommended solution.
For more information, refer to the vulnerability details in the Open Source Vulnerability format or contact info@devnack.com for further support.
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