Vulnerability in mwifiex: bring down link before deleting interface
Summary
GSD-2021-1001224: mwifiex: bring down link before deleting interface. Affects Kernel versions >= a05829a7222e9d10c416dd2dbbf3929fe6646b89, < 35af69c7c0490fdccfc159c6a87e4d1dc070838a. No fix is published. How to fix ↓
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Background
The mwifiex package is a wireless network driver used in the Linux Kernel. It provides support for various Wi-Fi chipsets and enables wireless connectivity on Linux systems. The package is an integral part of the Linux Kernel and is responsible for managing wireless network interfaces and their associated functionalities.
Vulnerability Detail
The vulnerability identified in mwifiex involves the deletion of an interface without properly bringing down the link associated with it. This can lead to various security issues, although the exact impact and attack plausibility have not been proven yet. The vulnerability was introduced in version v5.12 of the Linux Kernel and has been fixed in version v5.13.3. The fix involves ensuring that the link is brought down before deleting the interface, thereby preventing any potential security risks.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
If updating the Linux Kernel is not immediately feasible, a temporary workaround can be implemented by manually bringing down the link associated with the interface before deleting it. This can be done using the appropriate network management commands specific to the Linux distribution being used. However, it is important to note that this is only a temporary solution and updating the Kernel is still recommended for a permanent fix.
Conclusion
In conclusion, the mwifiex package in the Linux Kernel is vulnerable to a security issue where the link associated with a network interface is not properly brought down before deletion. This vulnerability can potentially lead to security risks. It is recommended to update the Linux Kernel to version v5.13.3 or later to mitigate this vulnerability. If immediate updating is not possible, a temporary workaround is available by manually bringing down the link before deleting the interface. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
mwifiex is a wireless network driver used in the Linux Kernel to provide support for various Wi-Fi chipsets and enable wireless connectivity on Linux systems.
The exact impact of this vulnerability is not yet proven, but it has the potential to introduce security risks related to the deletion of network interfaces without properly bringing down the associated link.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.13.3 or later.
Yes, a temporary workaround is to manually bring down the link associated with the interface before deleting it.
For more information about this vulnerability, you can refer to the provided references link in the vulnerability details section.
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