Vulnerability in Kernel: PM / devfreq: rk3399_dmc: Disable edev on remove()
Summary
GSD-2022-1003363: PM / devfreq: rk3399_dmc: Disable edev on remove(). Affects Kernel versions < cb1be1d4be18fe286ba5a67d928598378fd7fbe5. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. The devfreq subsystem within the Kernel is responsible for managing the frequency scaling of devices to optimize power consumption. One of the components in this subsystem is rk3399_dmc, which handles the dynamic memory controller for Rockchip RK3399 SoCs. This vulnerability specifically affects the rk3399_dmc module when handling the removal of the device.
Vulnerability Detail
The vulnerability in the rk3399_dmc module occurs when the device is being removed. The module fails to disable the extended device (edev) during the removal process. This oversight can lead to potential security issues, although the exact impact and attack vectors have not been proven yet. It is important to note that this vulnerability has been addressed in the Linux Kernel version v5.15.46 through the commit cb1be1d4be18fe286ba5a67d928598378fd7fbe5.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The vulnerability in the rk3399_dmc module of the Kernel can potentially introduce security risks by failing to disable edev during device removal. It is crucial to update the Linux Kernel to version v5.15.46 or later to mitigate this vulnerability. For more information and assistance, please contact DevNack.com.
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FAQ
The exact impact of this vulnerability is not yet proven. However, it has the potential to introduce security risks due to the failure to disable edev during device removal.
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.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can find more information about the fix in the Linux Kernel repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/. Look for the commit with the hash cb1be1d4be18fe286ba5a67d928598378fd7fbe5.
For further support on vulnerability remediation, you can reach out to info@devnack.com.
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