RDMA/hfi1: Fix kernel pointer leak in Linux Kernel
Summary
GSD-2021-1001720: RDMA/hfi1: Fix kernel pointer leak. Affects Kernel versions >= 042a00f93aad5874937e00f36e68301f7e3a0af1, < 714bfabe5f2901d96902e271d7217601fe4703e5. No fix is published. How to fix ↓
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Background
The RDMA/hfi1 package is a component of the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) over the HFI1 InfiniBand driver. RDMA allows for high-speed data transfers between remote systems with minimal CPU overhead. The hfi1 driver specifically supports Mellanox InfiniBand Host Channel Adapters (HCAs). This vulnerability in the RDMA/hfi1 package allows for a kernel pointer leak, which can potentially expose sensitive information and lead to further security issues.
Vulnerability Detail
The vulnerability in the RDMA/hfi1 package is a kernel pointer leak. A kernel pointer leak occurs when a kernel memory address is unintentionally exposed to user space. This can happen due to improper handling of data structures or inadequate sanitization of user input. In the case of RDMA/hfi1, the vulnerability allows an attacker to obtain the value of a kernel pointer, which can be used to bypass security mechanisms, escalate privileges, or facilitate further attacks. The impact and attack plausibility of this vulnerability have not yet 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
The RDMA/hfi1 package in the Linux Kernel is vulnerable to a kernel pointer leak. This vulnerability can potentially expose sensitive information and lead to further security issues. It is recommended to update the Linux Kernel to version v5.14.10 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
RDMA/hfi1 is a component of the Linux Kernel that provides support for Remote Direct Memory Access (RDMA) over the HFI1 InfiniBand driver. It enables high-speed data transfers between remote systems with minimal CPU overhead.
A kernel pointer leak occurs when a kernel memory address is unintentionally exposed to user space. This can happen due to improper handling of data structures or inadequate sanitization of user input.
The vulnerability in RDMA/hfi1 can potentially expose sensitive information and lead to further security issues. An attacker could obtain the value of a kernel pointer, which can be used to bypass security mechanisms, escalate privileges, or facilitate further attacks.
No, the impact and attack plausibility of this vulnerability have not yet been proven. This vulnerability is an automated ID intended to aid in the discovery of potential security vulnerabilities.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.10 or later. The fix is implemented in commit 714bfabe5f2901d96902e271d7217601fe4703e5.
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