Vulnerability in Kernel: VLAN Traffic Leaks in mt7530
Summary
GSD-2021-1000595: net: dsa: mt7530: fix VLAN traffic leaks. Affects Kernel versions >= 83163f7dca5684816d01c8ccf4857aa74801e7b7, < b91117b66fe875723a4e79ec6263526fffdb44d2. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and manages system resources. It acts as an interface between the hardware and software layers, facilitating communication and coordination between various components. The mt7530 driver is responsible for managing the MediaTek MT7530 Ethernet switch, which is commonly used in network devices. This vulnerability specifically affects the VLAN functionality of the mt7530 driver, leading to potential traffic leaks.
Vulnerability Detail
The vulnerability in the mt7530 driver allows for VLAN traffic leaks. VLANs (Virtual Local Area Networks) are used to logically separate network traffic within a physical network infrastructure. However, due to a flaw in the mt7530 driver, VLAN traffic can leak between different VLANs, potentially exposing sensitive information to unauthorized parties. This vulnerability was introduced in version v4.16 of the Linux Kernel and has been fixed in version v5.10.42.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable VLAN functionality in the mt7530 driver until the Kernel update is applied. This can be achieved by modifying the driver configuration or using kernel boot parameters to disable VLAN support. However, it is important to note that this workaround may impact network functionality and should only be considered as a temporary solution.
Conclusion
The vulnerability in the mt7530 driver of the Kernel can result in VLAN traffic leaks, potentially exposing sensitive information. It is crucial to update the Linux Kernel to version v5.10.42 or later to mitigate this vulnerability. Users can also utilize tools like Vulert Playground to check if their systems are affected. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to VLAN traffic leaks, potentially exposing sensitive information to unauthorized parties.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v5.10.42. It is recommended to update the Kernel to this version or later to address the issue.
Yes, you can disable VLAN functionality in the mt7530 driver as a temporary workaround. However, this may impact network functionality and should only be considered until the Kernel update is applied.
You can refer to the official Linux Kernel documentation and the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000595.json for more details.
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