Use After Free Vulnerability in Kernel
Summary
GSD-2021-1001341: misc/libmasm/module: Fix two use after free in ibmasm_init_one. Affects Kernel versions < 38660031e80eaa6cc9370b031c180612f414b00d. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The vulnerability in question is related to the 'ibmasm_init_one' function in the 'misc/libmasm/module' module of the Kernel.
Vulnerability Detail
The 'ibmasm_init_one' function in the 'misc/libmasm/module' module of the Kernel has two instances of use after free vulnerabilities. These vulnerabilities occur when a program continues to use a pointer after the memory it points to has been freed. An attacker could potentially exploit these vulnerabilities to execute arbitrary code or cause a denial of service. The impact and attack plausibility of these vulnerabilities have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The use after free vulnerabilities in the 'ibmasm_init_one' function of the Kernel have been addressed in the Linux Kernel version v5.4.134. It is crucial to update the Kernel to the fixed version or a later version to mitigate the potential risks associated with these vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that manages the system's resources and facilitates communication between hardware and software.
A use after free vulnerability occurs when a program continues to use a pointer after the memory it points to has been freed. This can lead to various security issues, including arbitrary code execution or denial of service.
If successfully exploited, an attacker could execute arbitrary code or cause a denial of service by taking advantage of the use after free vulnerabilities in the 'ibmasm_init_one' function.
No, the impact and attack plausibility of these vulnerabilities have not been proven yet. However, it is still important to apply the fix to mitigate potential risks.
To fix this vulnerability, update the Linux Kernel to version v5.4.134 or a later version that includes the fix.
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