Vulnerability in RDMA/hfi1 Package: Panic Prevention when SDMA is Disabled
Summary
GSD-2022-1003975: RDMA/hfi1: Prevent panic when SDMA is disabled. Affects Kernel versions < 33794e8e9bcb4affc0ebff9cdec85acc8b8a1762. No fix is published. How to fix ↓
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Background
The RDMA/hfi1 package is a component of the Linux Kernel ecosystem. It provides support for Remote Direct Memory Access (RDMA) over the HFI1 InfiniBand driver. RDMA allows for high-speed data transfers between network-connected systems by bypassing the operating system's network stack. The hfi1 driver specifically handles communication with the HFI1 InfiniBand hardware. However, a vulnerability has been discovered in this package that can lead to a system panic when SDMA (Synchronous Direct Memory Access) is disabled.
Vulnerability Detail
The vulnerability in the RDMA/hfi1 package arises when SDMA is disabled. SDMA is a feature that allows for efficient data transfers between the host and the InfiniBand hardware. When SDMA is disabled, certain operations within the hfi1 driver can trigger a panic, resulting in a system crash. This vulnerability can be exploited by an attacker with local access to the system, potentially leading to a denial-of-service (DoS) scenario. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
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/hfi1 package in the Linux Kernel is vulnerable to a panic-inducing scenario when SDMA is disabled. This vulnerability can potentially lead to a denial-of-service situation. To mitigate the risk, it is recommended to update the Kernel to version v4.14.283 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
RDMA/hfi1 is a component of the Linux Kernel ecosystem that provides support for Remote Direct Memory Access (RDMA) over the HFI1 InfiniBand driver.
SDMA stands for Synchronous Direct Memory Access. It is a feature that allows for efficient data transfers between the host and the InfiniBand hardware.
The vulnerability can lead to a system panic and crash when SDMA is disabled, potentially resulting in a denial-of-service (DoS) scenario.
No, this vulnerability requires local access to the system to be exploited.
Yes, updating the Linux Kernel to version v4.14.283 or later will fix this vulnerability.
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