Vulnerability in Kernel package: scsi: bnx2fc
Summary
GSD-2022-1000101: scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put(). Affects Kernel versions >= 0cbf32e1681d870632a1772601cbaadd996dc978, < c93a290c862ccfa404e42d7420565730d67cbff9. 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: bnx2fc module within the Kernel package is specifically designed for Fibre Channel over Ethernet (FCoE) support. It enables the use of FCoE technology to transport SCSI commands over Ethernet networks. However, a vulnerability has been discovered in the scsi: bnx2fc module that could potentially be exploited by attackers.
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 freed memory is still accessible, potentially allowing an attacker to execute arbitrary code or cause a denial-of-service (DoS) situation. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in version v3.2 of the Linux Kernel and has been fixed in version v4.14.265 by commit c93a290c862ccfa404e42d7420565730d67cbff9.
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 scsi: bnx2fc module in the Kernel package is vulnerable to a use-after-free condition, which could potentially be exploited by attackers. To mitigate this vulnerability, it is crucial to update the Linux Kernel package to version v4.14.265 or later. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The scsi: bnx2fc module is a component of the Linux Kernel package that provides support for Fibre Channel over Ethernet (FCoE). It enables the use of FCoE technology to transport SCSI commands over Ethernet networks.
A use-after-free vulnerability occurs when a program continues to reference memory after it has been freed. This can lead to various security issues, including the potential execution of arbitrary code or a denial-of-service (DoS) situation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
Yes, the vulnerability has been fixed in version v4.14.265 of the Linux Kernel. It is recommended to update to this version or a later one to mitigate the risk.
No specific workaround has been mentioned for this vulnerability. It is recommended to update the Linux Kernel package to the fixed version.
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