Deadlock in rtllib_beacons_stop() in drivers: staging: rtl8192e
Summary
GSD-2022-1003943: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop(). Affects Kernel versions < 381045dc64d23a2229c47c5524c06bfc33d34446. No fix is published. How to fix ↓
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Background
The affected package is the Linux Kernel, specifically the drivers/staging/rtl8192e module. This module provides support for Realtek RTL8192E wireless LAN devices. It is part of the staging area in the Linux Kernel, which means it is still under development and may contain incomplete or unstable code. The rtl8192e module is responsible for managing wireless communication for RTL8192E devices. It includes functions for handling beacons, which are periodic broadcast messages used in wireless networks to synchronize devices and provide network information. The vulnerability in question is a deadlock that occurs in the rtllib_beacons_stop() function of the rtl8192e module.
Vulnerability Detail
The vulnerability is a deadlock that can occur in the rtllib_beacons_stop() function of the rtl8192e module. A deadlock is a situation where two or more threads or processes are unable to proceed because each is waiting for the other to release a resource. In this case, the deadlock occurs when the rtllib_beacons_stop() function is called while the device is in the process of stopping beacons. This can lead to a situation where the function waits indefinitely for a lock that will never be released, causing the system to become unresponsive. The impact of this vulnerability can vary depending on the specific use case and system configuration, but it has the potential to disrupt wireless communication and potentially lead to a denial-of-service condition.
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 solution is to update the Linux Kernel to a version that includes the fix.
Conclusion
In conclusion, the vulnerability in the drivers/staging/rtl8192e module of the Linux Kernel can lead to a deadlock in the rtllib_beacons_stop() function, potentially disrupting wireless communication and causing a denial-of-service condition. The vulnerability has been fixed in Linux Kernel version v4.14.283, and users are advised to update their Linux Kernel to a version that includes this fix. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the specific use case and system configuration, but it has the potential to disrupt wireless communication and potentially lead to a denial-of-service condition.
You can check if your system is affected by this vulnerability by verifying the version of the Linux Kernel you are using. If your system is running a version prior to v4.14.283, it is likely vulnerable. You can also use tools like Vulert (https://vulert.com) to scan your system for known vulnerabilities.
Yes, a patch for this vulnerability is available in Linux Kernel version v4.14.283. Users should update their Linux Kernel to a version that includes this patch to fix the vulnerability.
There are no known exploits for this vulnerability at the time of this report. However, it is always recommended to apply security patches promptly to mitigate the risk of potential exploits.
You can find more information about this vulnerability in the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the associated commit (381045dc64d23a2229c47c5524c06bfc33d34446).
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