Critical Vulnerability in Linux Kernel: ath10k Driver Reliability Issue
Summary
CVE-2025-39746: In the Linux kernel, the following vulnerability has been resolved: wifi: ath10k: shutdown driver when hardware is unreliable In rare cases, ath10k may lose connection with the PCIe bus due to some unknown reasons, which... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, managing hardware and system resources. It provides essential functionalities such as process management, memory management, and device control. The ath10k driver is responsible for managing Qualcomm Atheros 802.11ac wireless LAN devices. This driver is crucial for maintaining stable wireless connections. However, it has been identified to have a vulnerability that can lead to system crashes under certain conditions.
Vulnerability Detail
In the Linux kernel, a vulnerability has been discovered in the ath10k driver that can cause the system to crash when the hardware becomes unreliable. This issue arises when the ath10k driver loses connection with the PCIe bus, leading to a series of timeout errors and potential system panic. The vulnerability can result in significant disruptions, especially during system resume operations, as the driver fails to manage the hardware correctly. The panic messages indicate that the driver is unable to stop the WMI commands, which can lead to a complete system failure.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can monitor the ath10k driver for repeated failures and manually restart the hardware if necessary. However, this is not a permanent solution and updating the package is recommended.
Conclusion
The vulnerability CVE-2025-39746 in the Linux kernel's ath10k driver poses a significant risk of system crashes due to hardware reliability issues. It is crucial for users to update their systems to the latest patched versions to ensure stability and security. Temporary workarounds can be employed, but they are not substitutes for proper updates.
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FAQ
CVE-2025-39746 is a vulnerability in the Linux kernel's ath10k driver that can lead to system crashes due to hardware reliability issues.
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Symptoms include system crashes and panic messages related to the ath10k driver during operations involving the PCIe bus.
Yes, patches are available for Debian 13 and 14. Ensure you update to the specified versions to mitigate the vulnerability.
If immediate updates are not possible, monitor the ath10k driver for failures and consider restarting the hardware as a temporary measure.
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