Memory Leak Vulnerability in r8188eu Driver
Summary
GSD-2021-1002525: staging: r8188eu: fix a memory leak in rtw_wx_read32(). Affects Kernel versions >= 2b42bd58b32155a1be4dd78991845dec05aaef9e, < c8d3775745adacf9784a7a80a82d047051752573. No fix is published. How to fix ↓
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Background
The r8188eu driver is a staging driver in the Linux Kernel that provides support for Realtek RTL8188EU Wireless LAN adapters. It is responsible for managing the communication between the operating system and the wireless adapter. The driver is part of the staging directory, which means it is still under development and may contain experimental code that has not yet been fully tested or integrated into the mainline kernel. This vulnerability affects the r8188eu driver and can lead to a memory leak.
Vulnerability Detail
The vulnerability identified in the r8188eu driver is a memory leak in the rtw_wx_read32() function. A memory leak occurs when memory is allocated but not properly deallocated, leading to a gradual depletion of available memory resources. In this case, the memory leak occurs when reading a 32-bit value from the wireless adapter. If this function is called repeatedly without freeing the allocated memory, it can result in a significant memory leak over time. This can eventually lead to system instability, performance degradation, and potentially even denial-of-service conditions.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. However, users can apply the patch provided by the Linux Kernel developers or update their Linux Kernel to the latest version to eliminate the memory leak issue.
Conclusion
The memory leak vulnerability in the r8188eu driver can have serious consequences for system stability and performance. It is crucial to apply the necessary patches or update the Linux Kernel to the latest version to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The memory leak vulnerability in the r8188eu driver can lead to system instability, performance degradation, and potential denial-of-service conditions. It is important to address this vulnerability to ensure the proper functioning and stability of the system.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies and alert you if any open-source vulnerabilities, including this memory leak vulnerability, are found.
At the time of this report, there is no known exploit for this vulnerability. However, it is always recommended to apply security patches and updates promptly to mitigate any potential risks.
This vulnerability requires local access to the system as it is related to the r8188eu wireless adapter driver. An attacker would need to have physical or remote access to the affected system to exploit this vulnerability.
There are no alternative drivers available for the r8188eu wireless adapter. The recommended approach is to apply the patch provided by the Linux Kernel developers or update the Linux Kernel to the latest version, which includes the fix for this vulnerability.
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