NULL pointer dereference in qlcnic_83xx_add_rings() in Kernel
Summary
GSD-2021-1002377: net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings(). Affects Kernel versions >= 7f9664525f9cb507de9198a395a111371413f230, < b4f217d6fcc00c3fdc0921a7691f30be7490b073. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a crucial component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionalities for the proper functioning of the system. The qlcnic driver is responsible for managing QLogic network interface cards (NICs) in the Kernel. These NICs are commonly used in data centers and enterprise environments. The qlcnic_83xx_add_rings() function is a part of the qlcnic driver and is responsible for adding rings to the NIC. However, a vulnerability in this function can lead to a NULL pointer dereference, causing the system to crash or potentially allowing an attacker to execute arbitrary code.
Vulnerability Detail
The vulnerability in qlcnic_83xx_add_rings() arises due to a lack of proper validation of input parameters. When certain conditions are met, an attacker can trigger a NULL pointer dereference, leading to a system crash or potential code execution. This vulnerability can be exploited remotely by an attacker with network access to the affected system. The impact of this vulnerability can range from denial of service (DoS) to remote code execution, depending on the attacker's capabilities and the system's configuration. It is crucial to patch the Kernel to mitigate this vulnerability.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a workaround, users can apply patches or backports provided by their Linux distribution's security team. These patches may include specific fixes for the vulnerability in question. It is recommended to consult the official documentation and support channels of the respective Linux distribution for guidance on applying the necessary patches or backports.
Conclusion
The NULL pointer dereference vulnerability in qlcnic_83xx_add_rings() in the Kernel can have severe consequences, ranging from system crashes to potential code execution. It is crucial to update the Linux Kernel to the latest stable version to mitigate this vulnerability. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can range from denial of service (DoS) to remote code execution, depending on the attacker's capabilities and the system's configuration.
Yes, this vulnerability can be exploited remotely by an attacker with network access to the affected system.
To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v4.9.292 or later.
Yes, users can apply patches or backports provided by their Linux distribution's security team as a temporary workaround.
For more information about this vulnerability, you can refer to the official documentation and support channels of the Linux Kernel development team.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
