Vulnerability in Kernel package: mt76: mt7915: fix txrate reporting
Summary
UVI-2021-1000251: mt76: mt7915: fix txrate reporting. Affects Kernel versions >= e57b7901469fc0b021930b83a8094baaf3d81b09, < 4bd926e5ca88eac4d95eacb806b229f8729bc62e. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system that provides the core functionality and interfaces for various hardware and software components. It acts as a bridge between the hardware and the user-level software, facilitating communication and resource management. The mt76 module within the Kernel package is responsible for supporting MediaTek MT76x0 and MT76x2 wireless LAN devices. These devices are commonly found in Wi-Fi routers, access points, and other networking equipment. The mt7915 driver is specifically designed for the MT7915 chipset, providing support for high-speed wireless connections. However, a vulnerability has been identified in the txrate reporting mechanism of the mt7915 driver, which could lead to inaccurate transmission rate reporting and potential performance issues in wireless communication.
Vulnerability Detail
The vulnerability in the mt7915 driver's txrate reporting mechanism can result in incorrect transmission rate reporting. This can lead to various issues, including suboptimal network performance, inefficient bandwidth utilization, and potential connectivity problems. Attackers may also exploit this vulnerability to manipulate the reported transmission rates, potentially leading to denial-of-service (DoS) attacks or other malicious activities. The vulnerability was introduced in version v5.8 of the Linux Kernel and has been fixed in version v5.12.4.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable the mt7915 driver or switch to an alternative wireless LAN device if available. However, this may result in the loss of specific features or reduced wireless capabilities. It is advisable to consult the documentation or support resources for the specific hardware or Linux distribution for guidance on implementing this workaround.
Conclusion
The vulnerability in the mt7915 driver's txrate reporting mechanism can have significant implications for network performance and security. It is crucial to update the Linux Kernel package to version v5.12.4 or later to mitigate this vulnerability. Alternatively, users can consider applying the provided workaround or seeking further guidance from the appropriate hardware or Linux distribution support channels. For additional support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The vulnerability can lead to inaccurate transmission rate reporting, causing suboptimal network performance, inefficient bandwidth utilization, and potential connectivity problems. Attackers may also exploit this vulnerability for malicious purposes.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any known vulnerabilities.
Yes, the vulnerability has been fixed in version v5.12.4 of the Linux Kernel. It is recommended to update to this version or a later one to mitigate the issue.
As a workaround, you can disable the mt7915 driver or switch to an alternative wireless LAN device. However, this may result in the loss of specific features or reduced wireless capabilities.
For more information about this vulnerability, you can refer to the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/UVI-2021-1000251.json
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