RDMA/ipoib: Fix warning caused by destroying non-initial netns in Kernel
Summary
GSD-2021-1000959: RDMA/ipoib: Fix warning caused by destroying non-initial netns. Affects Kernel versions >= 5ce2dced8e95e76ff7439863a118a053a7fc6f91, < 67cf4e447b5e5e9e94996cb6812ae2828e0e0e27. 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 with hardware devices. RDMA (Remote Direct Memory Access) is a feature in the Kernel that allows for high-speed data transfer between remote systems. The ipoib (IP over InfiniBand) module is a part of RDMA that enables IP communication over InfiniBand networks. This vulnerability in the RDMA/ipoib module can lead to a warning when destroying a non-initial network namespace (netns).
Vulnerability Detail
The vulnerability arises when a non-initial netns is destroyed in the RDMA/ipoib module. This can trigger a warning, indicating a potential issue with the destruction process. The impact and attack plausibility of this warning have not been proven yet. However, it is essential to address this warning to ensure the stability and security of the system. The vulnerability was introduced in version v5.10 of the Linux Kernel and has been fixed in version v5.10.44.
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 vulnerability in the RDMA/ipoib module of the Kernel, which caused a warning when destroying non-initial netns, has been fixed in version v5.10.44. It is recommended to update the Linux Kernel to this version or later to ensure system stability and security. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
RDMA/ipoib is a module in the Linux Kernel that enables IP communication over InfiniBand networks. It allows for high-speed data transfer between remote systems.
A netns refers to a network namespace in the Linux Kernel. It provides an isolated network environment with its own network interfaces, routing tables, and firewall rules.
The impact of this vulnerability is not yet proven. However, it is important to address the warning caused by destroying non-initial netns to ensure system stability and security.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
You can find more information about this vulnerability in the Open Source Vulnerability database maintained by the Cloud Security Alliance. The vulnerability ID is GSD-2021-1000959.
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