Change mutex_init() location in media: mxl111sf
Summary
GSD-2021-1002709: media: mxl111sf: change mutex_init() location. Affects Kernel versions >= 8572211842afc53c8450fb470f2b8d02ba7592e0, < b99bdf127af91d53919e96292c05f737c45ea59a. No fix is published. How to fix ↓
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Background
The media package in the Linux Kernel provides support for various media devices and drivers. One of the components in this package is mxl111sf, which is responsible for handling a specific media device. The mxl111sf driver utilizes mutexes for synchronization purposes. Mutexes are a type of lock that allows only one thread to access a shared resource at a time. In the mxl111sf driver, the mutex initialization location has been changed, which can potentially introduce a security vulnerability.
Vulnerability Detail
The vulnerability in the media: mxl111sf driver arises from a change in the location of mutex initialization. This change can lead to incorrect usage of mutexes, resulting in potential race conditions or other synchronization issues. Attackers may be able to exploit these vulnerabilities to gain unauthorized access, modify data, or disrupt the normal operation of the media device. The impact and attack plausibility of this vulnerability have not been proven yet.
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.
Conclusion
The media: mxl111sf driver in the Linux Kernel is vulnerable due to a change in the mutex initialization location. This vulnerability can potentially lead to synchronization issues and unauthorized access to the media device. It is recommended to update the kernel to version v5.10.88 or later to fix this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it could potentially lead to race conditions, synchronization issues, and unauthorized access to the media device.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
There are no known exploits for this vulnerability at the moment.
Updating the kernel is the recommended approach to mitigate the risk associated with this vulnerability. However, if updating is not feasible, it is advised to follow general security best practices, such as restricting access to the affected media device and monitoring for any suspicious activity.
You can find more information about this vulnerability in the Linux Kernel's Git repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/.
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