Vulnerability in Kernel: scsi: hisi_sas: Free irq vectors in order for v3 HW
Summary
GSD-2022-1001394: scsi: hisi_sas: Free irq vectors in order for v3 HW. Affects Kernel versions < 8b6eab9d683bae7f88dc894b8c851f866032301c. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and provides an interface for applications to interact with the hardware. It is responsible for handling various tasks, including device drivers, memory management, and process scheduling. The vulnerability in the Kernel's scsi subsystem affects the hisi_sas driver, which is used for managing SAS (Serial Attached SCSI) host controllers. This vulnerability specifically impacts the handling of irq vectors for v3 hardware.
Vulnerability Detail
The vulnerability arises from a failure to properly free irq vectors in the hisi_sas driver for v3 hardware. This can lead to resource exhaustion and potential denial-of-service attacks. An attacker could exploit this vulnerability to cause a system crash or disrupt the normal operation of the affected system. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
The vulnerability has been fixed in the Linux Kernel version v5.16.20 by commit 8b6eab9d683bae7f88dc894b8c851f866032301c. To fix the vulnerability, users should update their Kernel to the latest version available. This can be done by downloading the updated Kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and following the instructions provided for building and installing the Kernel.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel's scsi subsystem, specifically in the hisi_sas driver for v3 hardware, can lead to resource exhaustion and potential denial-of-service attacks. It is crucial to update the Kernel to the latest version to mitigate the risk associated with this vulnerability. For further support and guidance, you can contact DevNack.com.
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FAQ
The impact of this vulnerability can range from system crashes to denial-of-service attacks, potentially disrupting the normal operation of the affected system.
You can use tools like Vulert (https://vulert.com) to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities in the software.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the necessary updates to mitigate the risk.
The details regarding remote exploitation have not been provided in the vulnerability report. However, it is recommended to update the Kernel to the latest version to ensure the system is protected against potential remote attacks.
For further support on vulnerability remediation, you can reach out to info@devnack.com. They can provide assistance and guidance in addressing this vulnerability.
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