Vulnerability in Kernel package: scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put()
Summary
GSD-2022-1000126: scsi: bnx2fc: Flush destroy_work queue before calling bnx2fc_interface_put(). Affects Kernel versions >= 0cbf32e1681d870632a1772601cbaadd996dc978, < de6336b17a1376db1c0f7a528cce8783db0881c0. 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 functions and facilitating communication between hardware and software. It provides essential services such as memory management, process scheduling, and device drivers. The scsi subsystem within the Kernel package handles communication with SCSI (Small Computer System Interface) devices, including storage devices like hard drives and tape drives. The bnx2fc driver is a part of the scsi subsystem and is used for Broadcom NetXtreme II Fibre Channel over Ethernet (FCoE) devices. This vulnerability affects the bnx2fc driver and can potentially be exploited by an attacker.
Vulnerability Detail
The vulnerability in the bnx2fc driver arises from a failure to flush the destroy_work queue before calling bnx2fc_interface_put(). This can lead to a use-after-free condition, where a pointer to freed memory is still accessed. An attacker may be able to exploit this vulnerability to execute arbitrary code or cause a denial-of-service (DoS) condition. 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.
Conclusion
The vulnerability in the bnx2fc driver of the Kernel package can potentially lead to arbitrary code execution or a denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to version v4.19.228 or later to fix this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability can range from arbitrary code execution to a denial-of-service (DoS) condition. However, the actual impact and attack plausibility have not been proven yet.
You can use the Vulert Playground at Vulert Scanner to check if your system 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, a patch for this vulnerability is available in Linux Kernel version v4.19.228 or later. It is recommended to update to the latest version to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. Further analysis is required to assess the potential remote attack vectors.
There are no known instances of this vulnerability being exploited at the moment. However, it is advisable to apply the patch as a preventive measure.
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