RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests
Summary
GSD-2021-1001728: RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests. Affects Kernel versions >= e51060f08a61965c4dd91516d82fe90617152590, < 03d884671572af8bcfbc9e63944c1021efce7589. No fix is published. How to fix ↓
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Background
The RDMA/cma package is a component of the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) communication. RDMA allows for high-speed data transfers between remote systems without involving the CPU. The RDMA/cma package includes functions for managing RDMA addresses and connections. This vulnerability affects the RDMA/cma package in the Linux Kernel.
Vulnerability Detail
The vulnerability in the RDMA/cma package arises from a timing issue. Specifically, the function rdma_addr_cancel() is not guaranteed to complete before issuing more requests. This can lead to a race condition where new requests are sent before the cancellation of previous requests is fully processed. An attacker could potentially exploit this vulnerability to manipulate the RDMA communication and cause unexpected behavior or security breaches.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
The RDMA/cma package in the Linux Kernel is vulnerable to a timing issue that can lead to a race condition in the RDMA communication. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.14.10 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
RDMA/cma is a package in the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) communication. It enables high-speed data transfers between remote systems without involving the CPU.
This vulnerability can lead to a race condition in the RDMA communication, potentially causing unexpected behavior or security breaches.
To fix this vulnerability, update the Linux Kernel to version v5.14.10 or later.
No, there is no known workaround for this vulnerability. It is necessary to update the Linux Kernel to the recommended version.
You can obtain the updated Linux Kernel from the official Linux Kernel repository.
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