Critical Vulnerability in Linux Package: Fix for ath12k Event Locking Issue
Summary
DEBIAN-CVE-2023-52769: In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix htt mlo-offset event locking The ath12k active pdevs are protected by RCU but the htt mlo-offset event handling code calling ath12k_ma... Affects linux versions < 6.6.8-1. Fixed in 6.6.8-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It serves as the foundation for various applications and services, ensuring efficient operation and performance. This package is crucial for network operations, including wireless connectivity, making it susceptible to vulnerabilities that could compromise system integrity and security.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the ath12k driver related to the handling of the htt mlo-offset event. The active physical devices (pdevs) are protected by Read-Copy Update (RCU) mechanisms; however, the code responsible for processing the event was not marked as a read-side critical section. This oversight could lead to potential use-after-free issues, which may allow an attacker to exploit the vulnerability, leading to system crashes or unauthorized access.
How To Fix
Minimum fixed version
6.6.8-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it is available to mitigate any risks associated with the vulnerability.
Conclusion
The vulnerability identified in the Linux package, specifically within the ath12k driver, poses significant risks to system security and stability. Users are strongly advised to update to the patched version to protect against potential exploitation. Utilizing tools like Vulert can further enhance security by providing real-time monitoring for open-source vulnerabilities.
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FAQ
The vulnerability is related to improper handling of event locking in the ath12k driver, which could lead to use-after-free issues.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
Exploitation of this vulnerability could lead to system crashes or unauthorized access, compromising the security and stability of the system.
Yes, a patch is available in version 6.6.8-1 of the Linux package. Users should update to this version or later.
While there are no specific workarounds, it is crucial to monitor the situation and apply the patch as soon as possible to mitigate risks.
References
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