Vulnerability in scsi: target: core in Linux Kernel
Summary
GSD-2021-1000569: scsi: target: core: Avoid smp_processor_id() in preemptible code. Affects Kernel versions >= 1526d9f10c6184031e42afad0adbdde1213e8ad1, < a20b6eaf4f35046a429cde57bee7eb5f13d6857f. No fix is published. How to fix ↓
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Background
The scsi: target: core is a component of the Linux Kernel that handles SCSI target functionality. It provides the necessary infrastructure for implementing SCSI target drivers and managing SCSI target devices. The core is responsible for handling commands, managing I/O queues, and performing other essential tasks related to SCSI target operations. However, a vulnerability has been discovered in this component that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in scsi: target: core involves the use of smp_processor_id() in preemptible code. The smp_processor_id() function returns the ID of the current processor, which can be used to determine the execution context in a multi-processor system. However, using this function in preemptible code can lead to race conditions and other concurrency issues. An attacker could potentially exploit these issues to gain unauthorized access, escalate privileges, or cause denial-of-service conditions. The impact and attack plausibility of this vulnerability have not been proven yet.
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 solution is to update the Linux Kernel to the fixed version.
Conclusion
The vulnerability in scsi: target: core in the Linux Kernel could potentially be exploited by attackers. It is crucial to update the Linux Kernel to the fixed version v5.12.9 or later to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The scsi: target: core is a component of the Linux Kernel that handles SCSI target functionality. It provides the necessary infrastructure for implementing SCSI target drivers and managing SCSI target devices.
The impact of this vulnerability is not yet proven. However, it could potentially be exploited by attackers to gain unauthorized access, escalate privileges, or cause denial-of-service conditions.
To fix this vulnerability, users should update their Linux Kernel to version v5.12.9 or later.
There is no specific workaround mentioned for this vulnerability. The recommended solution is to update the Linux Kernel to the fixed version.
To prevent similar vulnerabilities in the future, it is recommended to regularly update the Linux Kernel to ensure the latest security patches and fixes are applied.
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