Reserve extra IRQ vectors in scsi: qla2xxx
Summary
GSD-2021-1000117: scsi: qla2xxx: Reserve extra IRQ vectors. Affects Kernel versions >= a6dcfe08487e5e83b6b4214c959a9577a9ed2d9f, < 4ecd42dec858b6632c5f024fe13e9ad6c30f2734. No fix is published. How to fix ↓
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Background
The scsi: qla2xxx package is a SCSI driver for QLogic Fibre Channel Host Bus Adapters (HBAs) in the Linux Kernel. It provides support for connecting storage devices to the system via Fibre Channel. The package is an integral part of the Linux Kernel and is widely used in various Linux distributions.
Vulnerability Detail
The vulnerability in scsi: qla2xxx allows an attacker to exploit a lack of reserved Interrupt Request (IRQ) vectors, potentially leading to a denial-of-service (DoS) attack. By exhausting available IRQ vectors, an attacker can disrupt the normal operation of the system, causing it to become unresponsive or crash. This vulnerability was introduced in version v5.11 of the Linux Kernel and has been fixed in version v5.11.20.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.11.20 or later. This can be done by downloading the latest kernel source code from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it for the target system. Alternatively, users can wait for their Linux distribution to release an updated kernel package that includes the fix.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix as soon as possible.
Conclusion
The scsi: qla2xxx package in the Linux Kernel is vulnerable to a DoS attack due to a lack of reserved IRQ vectors. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.11.20 or later. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
scsi: qla2xxx is a SCSI driver for QLogic Fibre Channel Host Bus Adapters (HBAs) in the Linux Kernel. It enables the connection of storage devices to the system via Fibre Channel.
This vulnerability can be exploited by an attacker to cause a denial-of-service (DoS) condition on the affected system. By exhausting available IRQ vectors, the attacker can disrupt the normal operation of the system, potentially leading to system crashes or unresponsiveness.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.11.20 or later. This can be done by downloading the latest kernel source code from the official Linux Kernel repository and compiling it for the target system.
No, there is no known workaround for this vulnerability. It is recommended to apply the fix as soon as possible.
This vulnerability was introduced in version v5.11 of the Linux Kernel. Versions prior to v5.11 are not affected. The vulnerability has been fixed in version v5.11.20.
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