NULL pointer dereference in qlcnic_83xx_add_rings() - Kernel
Summary
GSD-2021-1002561: net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings(). Affects Kernel versions >= 7f9664525f9cb507de9198a395a111371413f230, < c5ef33c1489b2cd74368057fa00b5d2183bb5853. No fix is published. How to fix ↓
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Background
The Kernel is the core component of the Linux operating system that manages system resources and provides an interface for software to interact with the hardware. It is responsible for tasks such as process management, memory management, and device drivers. The qlcnic driver is used for QLogic network interface cards (NICs) and provides support for various QLogic Ethernet controllers. This vulnerability affects the qlcnic driver in the Kernel.
Vulnerability Detail
The vulnerability, identified as GSD-2021-1002561, is a NULL pointer dereference in the qlcnic_83xx_add_rings() function of the qlcnic driver. This vulnerability was introduced in version v3.9 of the Linux Kernel and was fixed in version v5.15.7. A NULL pointer dereference occurs when a program attempts to access or manipulate data using a null pointer, leading to a crash or potential code execution. In the case of qlcnic_83xx_add_rings(), a NULL pointer dereference can occur during the initialization of rings, potentially leading to a system crash or other undefined behavior.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the vulnerability GSD-2021-1002561 in the qlcnic driver of the Linux Kernel can lead to a NULL pointer dereference, potentially resulting in a system crash or other undefined behavior. It is recommended to update the Linux Kernel to version v5.15.7 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
A NULL pointer dereference occurs when a program attempts to access or manipulate data using a null pointer. This can lead to a crash or potential code execution.
qlcnic_83xx_add_rings() is a function in the qlcnic driver that is responsible for initializing rings for QLogic Ethernet controllers.
The vulnerability can result in a system crash or other undefined behavior, potentially leading to a denial of service or privilege escalation.
The vulnerability was introduced in version v3.9 of the Linux Kernel and is fixed in version v5.15.7.
Users can obtain the updated Linux Kernel from the official Linux Kernel repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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