Vulnerability in Kernel: nvmet-rdma
Summary
GSD-2021-1000315: nvmet-rdma: Fix NULL deref when SEND is completed with error. Affects Kernel versions >= ca0f1a8055be2a04073af435dc68419334481638, < 64f3410c7bfc389b1a58611d0799f4a36ce4b6b5. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The nvmet-rdma module is responsible for enabling remote direct memory access (RDMA) support for the NVMe over Fabrics (NVMe-oF) subsystem in the Kernel. NVMe-oF allows remote storage devices to be accessed over a network using the NVMe protocol, providing high-performance storage capabilities. However, a vulnerability has been discovered in the nvmet-rdma module that could lead to a NULL dereference when a SEND operation is completed with an error.
Vulnerability Detail
The vulnerability in the nvmet-rdma module occurs when a SEND operation encounters an error. Due to a programming error, a NULL pointer dereference can occur, leading to a system crash or potential privilege escalation. An attacker could potentially exploit this vulnerability to crash the system or execute arbitrary code with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the security and stability of the system.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability can be mitigated by updating the Kernel, there is no specific workaround provided. It is recommended to follow the fix mentioned above and update the Kernel to the latest version.
Conclusion
The vulnerability in the nvmet-rdma module of the Kernel can lead to a NULL dereference when a SEND operation is completed with an error. It is crucial to update the Kernel to the latest version to mitigate this vulnerability and ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software.
The nvmet-rdma module enables remote direct memory access (RDMA) support for the NVMe over Fabrics (NVMe-oF) subsystem in the Linux Kernel. It allows remote storage devices to be accessed over a network using the NVMe protocol.
A NULL dereference occurs when a program attempts to access or manipulate memory using a NULL pointer, which does not point to a valid memory location. This can lead to a system crash or potential security vulnerabilities.
The potential consequences of this vulnerability include system crashes, privilege escalation, and the execution of arbitrary code with elevated privileges.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.38 or later. This will ensure that the vulnerable code is patched and the NULL dereference issue is resolved.
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