net/qla3xxx: Fix schedule while atomic in ql_sem_spinlock
Summary
GSD-2021-1000829: net/qla3xxx: fix schedule while atomic in ql_sem_spinlock. Affects Kernel versions < 9cfaf83a961115f4d63a6fed029bf56aae6713cd. 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). These HBAs are used for connecting servers to storage area networks (SANs) and are commonly employed in enterprise environments. The ql_sem_spinlock function in this package is responsible for acquiring a spinlock to protect critical sections of code.
Vulnerability Detail
The vulnerability identified as GSD-2021-1000829 in the net/qla3xxx package involves a schedule while atomic issue in the ql_sem_spinlock function. This vulnerability allows an attacker to trigger a kernel panic by causing a scheduling while atomic condition. The impact of this vulnerability can lead to a denial of service (DoS) attack, potentially disrupting the normal operation of the affected system. The vulnerability was fixed in Linux Kernel version v4.4.273 by commit 9cfaf83a961115f4d63a6fed029bf56aae6713cd.
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.
Conclusion
The net/qla3xxx package in the Linux Kernel was found to have a vulnerability (GSD-2021-1000829) that could lead to a denial of service (DoS) attack. The vulnerability has been fixed in Linux Kernel version v4.4.273. It is recommended to update the kernel to this version or later to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a denial of service (DoS) attack, potentially causing a kernel panic and disrupting the normal operation of the affected system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including GSD-2021-1000829.
Yes, the vulnerability was fixed in Linux Kernel version v4.4.273 by commit 9cfaf83a961115f4d63a6fed029bf56aae6713cd. It is recommended to update your kernel to this version or later.
There are no known exploits for this vulnerability at the time of this report. However, it is important to apply the fix as soon as possible to mitigate the risk.
You can find more information about this vulnerability in the GSD-2021-1000829 JSON report available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000829.json.
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