Vulnerability in Kernel: Fix freeing of uninitialized misc IRQ vector
Summary
GSD-2021-1001686: i40e: Fix freeing of uninitialized misc IRQ vector. Affects Kernel versions >= c17401a1dd210a5f22ab1ec7c7366037c158a14c, < 75099439209d3cda439a1d9b00d19a50f0066fef. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers. The i40e driver is responsible for managing Intel 40 Gigabit Ethernet adapters. These adapters are commonly used in data centers and high-performance computing environments. The i40e driver allows the Kernel to communicate with these adapters and control their operations. However, a vulnerability has been discovered in the i40e driver that could lead to potential security issues.
Vulnerability Detail
The vulnerability in the i40e driver involves the freeing of an uninitialized miscellaneous (misc) IRQ vector. An IRQ vector is a mechanism used by the Kernel to handle interrupts from hardware devices. When an interrupt occurs, the Kernel assigns an IRQ vector to the corresponding device driver to handle the interrupt. In the case of the i40e driver, there is a flaw in the code that leads to the freeing of an uninitialized misc IRQ vector. This can result in undefined behavior and potential security vulnerabilities. An attacker could potentially exploit this vulnerability to gain unauthorized access, escalate privileges, or cause a denial-of-service 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. The recommended solution is to update the Linux Kernel to the fixed version.
Conclusion
The vulnerability in the i40e driver that involves the freeing of an uninitialized misc IRQ vector can pose potential security risks. It is crucial to update the Linux Kernel to the fixed version to mitigate these risks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software.
The i40e driver is responsible for managing Intel 40 Gigabit Ethernet adapters. It allows the Kernel to communicate with these adapters and control their operations.
An IRQ vector is a mechanism used by the Kernel to handle interrupts from hardware devices. It assigns a specific vector to a device driver to handle the interrupt.
The potential consequences of this vulnerability include unauthorized access, privilege escalation, and denial-of-service attacks.
To fix this vulnerability, update the Linux Kernel to version v5.14.12 or later.
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