Improper Fix in ax25 Package Leads to UAF and NPD Bugs
Summary
GSD-2022-1000389: ax25: improve the incomplete fix to avoid UAF and NPD bugs. Affects Kernel versions < b9a229fd48bfa45edb954c75a57e3931a3da6c5f. 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 handling AX.25 frames, routing, and network interfaces. However, a vulnerability has been identified 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 arises from an incomplete fix. It has the potential to result in use-after-free and null pointer dereference bugs. These types of bugs can be exploited by an attacker to execute arbitrary code, cause a denial of service, or gain unauthorized access to sensitive information. The impact and attack plausibility of this vulnerability have not yet been proven. The vulnerability has been fixed in the Linux Kernel version v5.10.102 by commit b9a229fd48bfa45edb954c75a57e3931a3da6c5f.
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 apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
The ax25 package in the Linux Kernel is vulnerable to use-after-free and null pointer dereference bugs due to an incomplete fix. It is crucial to update the Linux Kernel to version v5.10.102 or later to mitigate this vulnerability. For further support on 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 used for packet radio networks.
The impact of this vulnerability is not yet proven, but it could potentially lead to arbitrary code execution, denial of service, or unauthorized access to sensitive information.
To fix this vulnerability, update the Linux Kernel to version v5.10.102 or later.
No, there is no known workaround for this vulnerability. It is necessary to apply the fix by updating the Linux Kernel.
More information about the fix can be found in the commit b9a229fd48bfa45edb954c75a57e3931a3da6c5f in the Linux Kernel repository.
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