UAF bugs in ax25 timers in Kernel
Summary
GSD-2022-1001944: ax25: Fix UAF bugs in ax25 timers. Affects Kernel versions < 5c62d3bf14100a88d30888b925fcb61a8c11c012. 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 functionalities and services to enable the proper functioning of the system. The ax25 module in the Kernel is responsible for implementing the AX.25 protocol, which is used for packet radio communication. This vulnerability specifically affects the ax25 timers, which are responsible for managing various time-based operations within the AX.25 protocol.
Vulnerability Detail
The UAF (Use-After-Free) bugs in ax25 timers can lead to potential security vulnerabilities. Use-After-Free is a type of memory corruption bug where a program continues to use a memory block after it has been freed, leading to unpredictable behavior and potential exploitation by attackers. In this case, the ax25 timers may not properly handle the freeing of memory, allowing an attacker to manipulate the freed memory and potentially execute arbitrary code or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not yet been proven.
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 UAF bugs in ax25 timers in the Kernel can potentially lead to security vulnerabilities. It is recommended to update the Kernel to the fixed version or any subsequent version that includes the fix. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of these UAF bugs is not yet proven, but they have the potential to lead to security vulnerabilities, including arbitrary code execution or denial-of-service attacks.
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Yes, the UAF bugs in ax25 timers have been fixed in the Linux Kernel version v5.10.112 by commit 5c62d3bf14100a88d30888b925fcb61a8c11c012.
There are no known exploits for this vulnerability at the moment.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry with ID GSD-2022-1001944.
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