Vulnerability in Kernel package: scsi: bnx2fc
Summary
GSD-2022-1000082: scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put(). Affects Kernel versions >= 0cbf32e1681d870632a1772601cbaadd996dc978, < 262550f29c750f7876b6ed1244281e72b64ebffb. No fix is published. How to fix ↓
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Background
The Kernel package is a crucial component of the Linux operating system, responsible for managing the system's core functionality. It provides an interface between the hardware and software layers, facilitating communication and coordination between various system components. The scsi: bnx2fc module within the Kernel package is specifically designed for Fibre Channel over Ethernet (FCoE) protocol support. It enables the system to communicate with Fibre Channel storage devices over Ethernet networks. However, a vulnerability has been identified in the scsi: bnx2fc module, which could potentially be exploited by attackers to compromise the system's security.
Vulnerability Detail
The vulnerability in the scsi: bnx2fc module arises from a failure to flush the destroy_work queue before calling bnx2fc_interface_put(). This flaw could lead to a use-after-free condition, where a reference to a deallocated memory object is still accessible. An attacker could potentially exploit this vulnerability to execute arbitrary code or perform other malicious actions on the affected system. The vulnerability was introduced in version v3.2 of the Linux Kernel and has been fixed in version v4.9.300 by commit 262550f29c750f7876b6ed1244281e72b64ebffb.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel package to the latest version.
Conclusion
The vulnerability in the scsi: bnx2fc module of the Kernel package poses a potential security risk to Linux systems. It is crucial to promptly update the Linux Kernel package to the fixed version to mitigate the vulnerability. Regularly updating software components and following best security practices are essential for maintaining a secure system. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
This vulnerability could allow attackers to execute arbitrary code or perform other malicious actions on 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 to the playground, and it will analyze and alert you in real-time if any open-source vulnerabilities, including this one, are detected.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to apply the recommended fix to mitigate any potential risks.
The recommended solution is to update the Linux Kernel package to the latest version. However, if updating is not feasible in the immediate term, implementing additional security measures, such as network segmentation and access controls, can help reduce the risk of exploitation.
You can find more information about this vulnerability in the official Linux Kernel repository and the GitHub repository of the Cloud Security Alliance's GSD Database (https://github.com/cloudsecurityalliance/gsd-database).
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