Vulnerability in Kernel: binder: fix async_free_space accounting for empty parcels
Summary
GSD-2022-1000056: binder: fix async_free_space accounting for empty parcels. Affects Kernel versions >= 74310e06be4d74dcf67cd108366710dee5c576d5, < 17691bada6b2f1d5f1c0f6d28cd9d0727023b0ff. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It plays a crucial role in ensuring the stability and security of the system. One of its features is the binder, which is a mechanism for inter-process communication (IPC) between different components of the system. The binder allows processes to send and receive messages, facilitating the interaction between applications and system services.
However, a vulnerability has been discovered in the binder component of the Kernel. This vulnerability affects the accounting of free space for empty parcels in the async_free_space function. The issue was introduced in version v4.14 of the Kernel and has been present until version v5.15.12. It was fixed in version v5.15.13 by commit 17691bada6b2f1d5f1c0f6d28cd9d0727023b0ff.
Vulnerability Detail
The vulnerability in the binder component of the Kernel relates to the incorrect accounting of free space for empty parcels in the async_free_space function. When handling empty parcels, the function fails to properly account for the space they occupy, leading to potential memory corruption or other security issues. An attacker could potentially exploit this vulnerability to gain unauthorized access, execute arbitrary code, or cause a denial-of-service condition.
The impact and attack plausibility of this vulnerability have not been proven yet, but it is important to address it to ensure the security and stability of the system.
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. The recommended approach is to update the Kernel to the fixed version.
Conclusion
In conclusion, a vulnerability has been discovered in the binder component of the Kernel, affecting the accounting of free space for empty parcels. This vulnerability can potentially lead to memory corruption or other security issues. To fix this vulnerability, it is recommended to update the Kernel to version v5.15.13 or later. There is no specific workaround mentioned, and it is important to address this vulnerability to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The binder is a mechanism for inter-process communication (IPC) in the Linux Kernel. It allows processes to send and receive messages, facilitating communication between different components of the system.
If successfully exploited, this vulnerability could allow an attacker to gain unauthorized access, execute arbitrary code, or cause a denial-of-service condition.
This vulnerability affects versions of the Kernel from v4.14 to v5.15.12. It has been fixed in version v5.15.13.
There is no known exploit for this vulnerability at the moment. However, it is important to address it by updating the Kernel to the fixed version.
If this vulnerability is not addressed, it could leave the system vulnerable to unauthorized access, arbitrary code execution, or denial-of-service attacks. It is crucial to update the Kernel to the fixed version to mitigate these risks.
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