Vulnerability in IB/hfi1: Fix leak of rcvhdrtail_dummy_kvaddr
Summary
GSD-2021-1002502: IB/hfi1: Fix leak of rcvhdrtail_dummy_kvaddr. Affects Kernel versions >= 46b010d3eeb8eb29c740c4ef09c666485f5c07e6, < 2c08271f4ed0e24633b3f81ceff61052b9d45efc. No fix is published. How to fix ↓
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Background
The IB/hfi1 package is a component of the Linux Kernel ecosystem. It provides support for InfiniBand (IB) and High-Speed Fabric Interconnect (HFI) devices. These devices are commonly used in high-performance computing and data center environments. The package enables communication between nodes in a cluster through the IB or HFI network. However, a vulnerability has been identified in the package that could lead to a memory leak of the rcvhdrtail_dummy_kvaddr. This vulnerability could potentially be exploited by an attacker to exhaust system resources and cause a denial-of-service (DoS) condition.
Vulnerability Detail
The vulnerability in IB/hfi1 is caused by a memory leak of the rcvhdrtail_dummy_kvaddr. When certain conditions are met, the package fails to properly release memory allocated for this variable, resulting in a continuous accumulation of memory. An attacker could potentially exploit this vulnerability by repeatedly triggering the conditions that cause the memory leak, leading to resource exhaustion and a DoS condition. The impact of this vulnerability can vary depending on the system's configuration and the attacker's capabilities. It is important to note that the actual attack plausibility and impact 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. The recommended approach is to update the Linux Kernel to the fixed version as mentioned in the 'how_to_fix' section.
Conclusion
The vulnerability in IB/hfi1 that causes a memory leak of the rcvhdrtail_dummy_kvaddr can be mitigated by updating the Linux Kernel to version v5.10.85 or later. This fix addresses the memory leak issue and reduces the risk of resource exhaustion and potential denial-of-service attacks. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
IB/hfi1 is a package in the Linux Kernel ecosystem that provides support for InfiniBand and High-Speed Fabric Interconnect devices. It enables communication between nodes in a cluster through the IB or HFI network.
The impact of this vulnerability can vary depending on the system's configuration and the attacker's capabilities. It could potentially lead to a denial-of-service (DoS) condition by exhausting system resources.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.85 or later, which includes the fix for the memory leak issue.
There is no specific workaround mentioned for this vulnerability. The recommended approach is to update the Linux Kernel to the fixed version.
For more information about this vulnerability, you can refer to the provided references link in the vulnerability details section.
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