Fix deadlock in rtllib_beacons_stop() in drivers: staging: rtl8192e
Summary
GSD-2022-1002558: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop(). Affects Kernel versions < ffd4c4d5293e4985092ea45ba21cad9326e2e434. No fix is published. How to fix ↓
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Background
The drivers: staging: rtl8192e package is a part of the Linux Kernel ecosystem. It provides support for the Realtek RTL8192E wireless LAN controller. This controller is commonly used in various devices to enable wireless network connectivity. The rtllib_beacons_stop() function within this package is responsible for stopping the transmission of beacon frames. However, a deadlock issue has been identified in this function, which can lead to system instability and potential security vulnerabilities.
Vulnerability Detail
The deadlock vulnerability in rtllib_beacons_stop() arises due to improper locking mechanisms. When multiple threads attempt to access this function concurrently, a deadlock situation can occur, where each thread is waiting for a resource that is held by another thread. This can result in system freeze or crash, impacting the availability and stability of the affected system. Additionally, if an attacker can trigger this deadlock scenario, they may be able to exploit it to gain unauthorized access or disrupt the normal operation 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 apply the patch provided in the Linux Kernel version v5.18.4 or later.
Conclusion
The deadlock vulnerability in rtllib_beacons_stop() in drivers: staging: rtl8192e can lead to system instability and potential security risks. It is crucial to update the Linux Kernel to version v5.18.4 or later to fix this vulnerability. Applying the provided patch will ensure proper locking mechanisms and prevent deadlock situations. For additional support, please contact DevNack.com.
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FAQ
The vulnerability can lead to system instability, including system freeze or crash. It may also provide an opportunity for attackers to exploit the deadlock situation and gain unauthorized access or disrupt system operations.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using just a manifest file like package-lock.json.
At the time of this report, there is no known public exploit for this vulnerability. However, it is always recommended to apply security patches promptly to mitigate any potential risks.
The vulnerability is present in versions prior to v5.18.4. It is recommended to update to version v5.18.4 or later to address the issue.
For further support on vulnerability remediation, you can reach out to info@devnack.com. They can provide guidance and assistance in addressing this vulnerability.
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