Use After Free Vulnerability in Kernel
Summary
GSD-2021-1001281: misc/libmasm/module: Fix two use after free in ibmasm_init_one. Affects Kernel versions < b9c87ce3bc6331f82811a8cf8e930423c22523a3. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The Kernel is responsible for ensuring the stability and security of the entire system. However, a use after free vulnerability has been discovered in the Kernel's misc/libmasm/module, specifically in the ibmasm_init_one function.
Vulnerability Detail
The use after free vulnerability in ibmasm_init_one arises when the function continues to reference memory after it has been freed. This can lead to various security issues, including the potential for an attacker to exploit the freed memory and execute arbitrary code or cause a denial of service. The vulnerability was addressed in Linux Kernel version v5.10.52 by commit b9c87ce3bc6331f82811a8cf8e930423c22523a3.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been mentioned for this vulnerability.
Conclusion
The use after free vulnerability in the Kernel's misc/libmasm/module has the potential to compromise the security and stability of affected systems. It is crucial to update the Linux Kernel to version v5.10.52 or later to mitigate this vulnerability. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
The use after free vulnerability in ibmasm_init_one can potentially allow an attacker to execute arbitrary code or cause a denial of service, compromising the security and stability of the affected system.
You can check if your system is affected by this vulnerability by examining the version of the Linux Kernel installed. If the Kernel version is earlier than v5.10.52, it is recommended to update to the latest version to mitigate the vulnerability.
At the time of this report, there are no known exploits for this vulnerability. However, it is essential to promptly update the Kernel to the fixed version to prevent potential exploitation.
The use after free vulnerability requires local access to the system to exploit it. Therefore, it cannot be exploited remotely over a network connection.
For more details about this vulnerability, including the specific code changes that address it, you can refer to the source link provided in the database_specific section of this report.
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