Kernel: Fix Kernel Panic During Unload/Load ath11k Modules
Summary
GSD-2022-1001412: ath11k: fix kernel panic during unload/load ath11k modules. Affects Kernel versions < 699e8c87e5c406af0f0606f40eeebd248c51b702. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the stability and security of the system. The ath11k module is a wireless driver used for Qualcomm Atheros Wi-Fi chipsets. It enables wireless connectivity and supports various features and protocols. However, a vulnerability has been discovered in the ath11k module that can lead to a kernel panic during the unload/load process.
Vulnerability Detail
The vulnerability in the ath11k module can trigger a kernel panic, which is a critical error that causes the operating system to crash. This vulnerability can be exploited by an attacker with local access to the system, potentially leading to a denial-of-service (DoS) condition. During the unload/load process of the ath11k module, certain conditions can trigger an invalid memory access, resulting in the kernel panic. This vulnerability has been addressed in the Linux Kernel version v5.16.20 by commit 699e8c87e5c406af0f0606f40eeebd248c51b702.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.16.20 or later. This can be done by obtaining the updated kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for the target system. Alternatively, users can wait for their Linux distribution to provide an updated package containing the fixed kernel version.
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Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
The vulnerability in the ath11k module can lead to a kernel panic and potential denial-of-service (DoS) condition. It is crucial to update the Linux Kernel to version v5.16.20 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a kernel panic, causing the operating system to crash and potentially resulting in a denial-of-service (DoS) condition.
An attacker with local access to the system can potentially exploit this vulnerability.
A kernel panic is a critical error in the operating system that causes it to crash. It is often triggered by a fatal error or an unrecoverable system condition.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
Yes, the vulnerability has been fixed in the Linux Kernel version v5.16.20 by commit 699e8c87e5c406af0f0606f40eeebd248c51b702. It is recommended to update the kernel to this version or later.
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