net/qla3xxx: Fix schedule while atomic in ql_sem_spinlock

Kernel Updated 02 Oct 2025

Summary

30/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000941: net/qla3xxx: fix schedule while atomic in ql_sem_spinlock. Affects Kernel versions < 4353eb42180dbc48fe7a8b69c6d2490d310537bf. No fix is published. How to fix ↓

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Background

The net/qla3xxx package is a part of the Linux Kernel ecosystem. It provides support for QLogic Fibre Channel Host Bus Adapters (HBAs) using the qla3xxx driver. These HBAs enable connectivity between servers and storage devices over Fibre Channel networks. The ql_sem_spinlock function in this package is responsible for acquiring and releasing a spinlock to protect critical sections of code.

Vulnerability Detail

The vulnerability in net/qla3xxx arises from a flaw in the ql_sem_spinlock function. It allows for a schedule while atomic condition, which can lead to a deadlock situation. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) by triggering the deadlock condition. The vulnerability has been assigned the ID GSD-2021-1000941 and has been fixed in Linux Kernel version v5.10.44 by commit 4353eb42180dbc48fe7a8b69c6d2490d310537bf.

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 v5.10.44 or later. This can be done by pulling the latest changes from the official Linux Kernel repository and rebuilding the kernel. The commit 4353eb42180dbc48fe7a8b69c6d2490d310537bf contains the necessary fix for this issue.

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Conclusion

The net/qla3xxx package in the Linux Kernel is vulnerable to a deadlock condition due to a flaw in the ql_sem_spinlock function. This vulnerability can be exploited to cause a denial-of-service (DoS) situation. It is crucial to update the Linux Kernel to version v5.10.44 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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