ax25: Fix NULL pointer dereferences in ax25 timers
Summary
GSD-2022-1001826: ax25: Fix NULL pointer dereferences in ax25 timers. Affects Kernel versions >= da6509fba636f7f8b2e902b1e4742fdbf1bf059f, < 43c107021d9160f6a1610bafba6dadc0323ae548. 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. AX.25 is a data link layer protocol used by amateur radio operators to establish connections over radio frequencies. The ax25 package provides the necessary functionality for handling AX.25 connections and managing timers related to these connections.
Vulnerability Detail
The vulnerability in the ax25 package involves NULL pointer dereferences in ax25 timers. This means that under certain conditions, the code may attempt to access memory using a NULL pointer, leading to a crash or potential code execution. The vulnerability was introduced in version v5.15.35 of the Linux Kernel and was fixed in version v5.15.35 by commit 43c107021d9160f6a1610bafba6dadc0323ae548. The impact and attack plausibility of this vulnerability have not been proven yet.
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.
Conclusion
The ax25 package in the Linux Kernel is vulnerable to NULL pointer dereferences in ax25 timers. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.15.35 or later. 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 by amateur radio operators.
A NULL pointer dereference occurs when a program attempts to access memory using a NULL pointer, leading to a crash or potential code execution.
The impact of this vulnerability is not yet proven, but it could potentially lead to crashes or code execution.
To fix this vulnerability, update the Linux Kernel to version v5.15.35 or later.
No specific workaround has been mentioned for this vulnerability.
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