Vulnerability in Kernel package: scsi: qla2xxx: Reserve extra IRQ vectors

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000080: scsi: qla2xxx: Reserve extra IRQ vectors. Affects Kernel versions >= a6dcfe08487e5e83b6b4214c959a9577a9ed2d9f, < 0f86d66b38501e3ac66cf2d9f9f8ad6838bad0e6. No fix is published. How to fix ↓

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Background

The Kernel package is a fundamental component of the Linux operating system, responsible for managing the system's core functionality. It provides an interface between the hardware and software layers, allowing applications to communicate with the underlying hardware. The scsi: qla2xxx module within the Kernel package is specifically designed for QLogic Fibre Channel Host Bus Adapters (HBAs). These HBAs enable high-speed data transfers between servers and storage devices. However, a vulnerability has been identified in the scsi: qla2xxx module that could potentially be exploited by attackers.

Vulnerability Detail

The vulnerability in the scsi: qla2xxx module involves the improper reservation of IRQ (Interrupt Request) vectors. IRQ vectors are used to handle hardware interrupts, allowing devices to signal the CPU for attention. By not properly reserving extra IRQ vectors, an attacker could potentially exhaust the available vectors, leading to a denial-of-service condition or other system instability. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.12.3.

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. However, as mentioned earlier, updating the Linux Kernel package to the fixed version v5.12.3 or later will address the issue.

Conclusion

In conclusion, the scsi: qla2xxx module in the Kernel package has a vulnerability related to the improper reservation of IRQ vectors. This vulnerability can potentially lead to denial-of-service conditions or system instability. It is crucial to update the Linux Kernel package to version v5.12.3 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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