Vulnerability in Kernel: net: mscc: ocelot: avoid overflowing the PTP timestamp FIFO
Summary
GSD-2021-1002094: net: mscc: ocelot: avoid overflowing the PTP timestamp FIFO. Affects Kernel versions >= 4e3b0468e6d7f3c38ce52320803769b49ba87930, < 3b4241817601a2f59beea471baa51763d7262232. 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 functionalities and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers. The net module within the Kernel is responsible for networking-related operations. The mscc driver is specifically designed for the ocelot switch, which is a multi-gigabit Ethernet switch. The Precision Time Protocol (PTP) is a protocol used for clock synchronization in networked systems. The PTP timestamp FIFO is a buffer used to store PTP timestamps. This vulnerability in the mscc driver allows for potential overflow of the PTP timestamp FIFO, leading to potential security risks and system instability.
Vulnerability Detail
The vulnerability in the mscc driver for the ocelot switch within the Kernel allows for potential overflowing of the PTP timestamp FIFO. This can result in various security risks and system instability. An attacker may be able to exploit this vulnerability to manipulate or disrupt the PTP synchronization process, leading to inaccurate timekeeping in networked systems. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the integrity and reliability of the system.
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. It is advised to update the Kernel to the fixed version as mentioned in the 'how_to_fix' section.
Conclusion
The vulnerability in the mscc driver for the ocelot switch within the Kernel can potentially lead to security risks and system instability. It is crucial to update the Kernel to the fixed version (v5.14.14 or later) to mitigate these risks. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability can include inaccurate timekeeping in networked systems, potential manipulation or disruption of the PTP synchronization process, and system instability.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. It does not require any signup and can analyze your application using just a manifest file like package-lock.json.
As of now, there is no known exploit for this vulnerability. However, it is crucial to address it by updating the Kernel to the fixed version to mitigate any potential risks.
The recommended solution is to update the Kernel to the fixed version. There are no alternative solutions mentioned for this specific vulnerability.
You can find more information about this vulnerability in the GSD-2021-1002094.json file available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002094.json
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