Divide-by-zero error in RDMA/core package
Summary
GSD-2021-1000502: RDMA/core: Prevent divide-by-zero error triggered by the user. Affects Kernel versions >= 9f85cbe50aa044a46f0a22fda323fa27b80c82da, < e6871b4270c05f8b212e7d98aee82b357972c80a. No fix is published. How to fix ↓
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Background
The RDMA/core package is a component of the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) technology. RDMA allows for high-speed data transfer between remote systems without involving the CPU, resulting in reduced latency and improved performance. The RDMA/core package is responsible for managing the RDMA functionality in the kernel. However, a vulnerability has been discovered in this package that can lead to a divide-by-zero error triggered by the user.
Vulnerability Detail
The vulnerability in the RDMA/core package arises from a divide-by-zero error that can be triggered by a user. This error occurs when a user performs a specific action that results in a division operation with a divisor of zero. As a result, the system crashes or becomes unresponsive, leading to a denial-of-service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v5.10 of the Linux Kernel and has been fixed in version v5.12.7.
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, the RDMA/core package in the Linux Kernel is vulnerable to a divide-by-zero error triggered by a user. This vulnerability can result in a system crash or unresponsiveness, leading to a denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to version v5.12.7 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The RDMA/core package is a component of the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) technology. It enables high-speed data transfer between remote systems without involving the CPU.
The vulnerability can lead to a divide-by-zero error triggered by a user, resulting in a system crash or unresponsiveness. This can lead to a denial-of-service (DoS) condition.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.12.7 or later. This update includes the necessary patch to prevent the divide-by-zero error in the RDMA/core package.
No specific workaround has been mentioned for this vulnerability.
Users can obtain the updated Linux Kernel from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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