Vulnerability in Kernel: scsi: hisi_sas: Free irq vectors in order for v3 HW
Summary
GSD-2022-1001054: scsi: hisi_sas: Free irq vectors in order for v3 HW. Affects Kernel versions < b4cc04fa8f1fc3816c8494d77abab3f72b9d2292. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that provides essential services and functions to other software applications. It acts as an interface between the hardware and software, facilitating communication and resource management. The scsi (Small Computer System Interface) subsystem in the Kernel enables communication with SCSI devices, such as hard drives and tape drives. The hisi_sas driver is responsible for managing SAS (Serial Attached SCSI) host controllers manufactured by HiSilicon. These controllers are used in various storage systems.
The vulnerability in the hisi_sas driver allows for the improper freeing of irq (interrupt request) vectors in the v3 hardware. This issue can potentially lead to resource leaks and instability in the system. The impact and attack plausibility of this vulnerability have not been proven yet.
Vulnerability Detail
The vulnerability in the hisi_sas driver arises from the improper freeing of irq vectors in the v3 hardware. When certain operations are performed, such as device initialization or removal, the driver fails to release the associated irq vectors properly. This can result in resource leaks and potential instability in the system. An attacker may be able to exploit this vulnerability to cause denial-of-service conditions or potentially execute arbitrary code with elevated privileges.
The vulnerability has been addressed in the Linux Kernel version v5.17.3 by commit b4cc04fa8f1fc3816c8494d77abab3f72b9d2292.
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.
Conclusion
The vulnerability in the hisi_sas driver of the Kernel can lead to resource leaks and potential instability in the system. It is recommended to update the Linux Kernel to version v5.17.3 or later to mitigate this vulnerability. Regularly applying security patches and updates is crucial to minimize the risk of known vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a fundamental component of the Linux operating system that provides essential services and functions to other software applications. It acts as an interface between the hardware and software, facilitating communication and resource management.
The scsi (Small Computer System Interface) subsystem in the Kernel enables communication with SCSI devices, such as hard drives and tape drives. It provides the necessary functionality for managing and accessing these devices.
The hisi_sas driver is responsible for managing SAS (Serial Attached SCSI) host controllers manufactured by HiSilicon. These controllers are used in various storage systems.
An irq (interrupt request) vector is a mechanism used by the operating system to handle interrupts from hardware devices. It represents a specific interrupt source and is associated with a corresponding interrupt handler in the Kernel.
An attacker may be able to exploit this vulnerability to cause denial-of-service conditions or potentially execute arbitrary code with elevated privileges. However, the impact and attack plausibility of this vulnerability have not been proven yet.
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