Vulnerability in Kernel: net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link
Summary
GSD-2022-1002391: net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link. Affects Kernel versions >= fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4, < 75e105d068cb98e43a6bb6b196fc006da52f9ee5. No fix is published. How to fix ↓
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Background
The Kernel is a crucial 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. One of the components within the Kernel is the Ethernet driver, specifically the stmmac driver, which handles the communication between the system and Ethernet devices. This driver includes the altr_tse_pcs function, which is responsible for managing the fixed-link configuration. However, a vulnerability has been identified in this function when used with a fixed-link setup.
Vulnerability Detail
The vulnerability in the altr_tse_pcs function of the stmmac Ethernet driver affects the Kernel versions starting from v4.8 up to v4.14.276. The issue was introduced in commit fb3bbdb859891e6bc27fd1afb3a07319f82c2ee4 and was fixed in commit 75e105d068cb98e43a6bb6b196fc006da52f9ee5. When using a fixed-link configuration, this vulnerability can lead to potential security risks. However, the exact impact and attack plausibility 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
In conclusion, a vulnerability has been identified in the altr_tse_pcs function of the stmmac Ethernet driver in the Linux Kernel. This vulnerability affects versions starting from v4.8 up to v4.14.276. It is recommended to update to the fixed version of the Kernel to mitigate the potential security risks. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The exact impact of this vulnerability is currently unknown. However, it has the potential to pose security risks when using a fixed-link configuration.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the tool will provide real-time alerts for open-source vulnerabilities, including this one.
Yes, a patch has been released in Linux Kernel version v4.14.276. It is recommended to update to this version or a later one to fix the vulnerability.
There are no specific temporary measures mentioned for this vulnerability. It is advised to update to the fixed version of the Linux Kernel as soon as possible.
You can refer to the vulnerability details in the GSD Database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002391.json for more information.
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