tipc: skb_linearize the head skb when reassembling msgs
Summary
GSD-2021-1000597: tipc: skb_linearize the head skb when reassembling msgs. Affects Kernel versions >= 45c8b7b175ceb2d542e0fe15247377bf3bce29ec, < 6da24cfc83ba4f97ea44fc7ae9999a006101755c. No fix is published. How to fix ↓
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Background
The Kernel package in the Linux ecosystem is responsible for managing the core functionality of the operating system. It provides essential services and interfaces for hardware, software, and user applications. The vulnerability in question affects the tipc module within the Kernel package. The tipc module is responsible for providing transparent inter-process communication between nodes in a cluster. It allows processes on different nodes to exchange messages and data seamlessly. However, a flaw in the implementation of message reassembly in the tipc module can lead to a security vulnerability.
Vulnerability Detail
The vulnerability arises from the failure to properly linearize the head skb (socket buffer) when reassembling messages in the tipc module. This can result in memory corruption or information disclosure. An attacker could potentially exploit this vulnerability to execute arbitrary code, escalate privileges, or obtain sensitive information. The impact and attack plausibility of this vulnerability 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
The tipc vulnerability in the Kernel package can lead to memory corruption or information disclosure. It is crucial to update the Kernel package to the latest version (v5.10.42) to mitigate the vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The impact of this vulnerability could range from memory corruption to information disclosure. It could potentially allow an attacker to execute arbitrary code, escalate privileges, or obtain sensitive information.
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 to the playground, and it will analyze and alert you in real-time if the vulnerability is present.
Yes, the vulnerability has been patched in Linux Kernel version v5.10.42. Users are advised to update their Kernel package to the latest version to mitigate the vulnerability.
There are no known exploits for this vulnerability at the moment. However, it is important to apply the patch as soon as possible to prevent potential exploitation.
You can find more information about this vulnerability in the GSD-2021-1000597 JSON file available in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000597.json).
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