Use-after-free issue in igb_clean_tx_ring in Kernel
Summary
GSD-2022-1004632: igb: fix a use-after-free issue in igb_clean_tx_ring. Affects Kernel versions >= 9cbc948b5a20c9c054d9631099c0426c16da546b, < c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66. No fix is published. How to fix ↓
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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 such as process management, memory management, and device drivers. The igb_clean_tx_ring function is part of the igb driver, which is responsible for managing Intel Gigabit Ethernet adapters. This function is used to clean the transmit (TX) ring, ensuring that completed transmissions are properly handled. However, a use-after-free vulnerability has been identified in the igb_clean_tx_ring function, which can lead to potential security risks.
Vulnerability Detail
The use-after-free vulnerability in igb_clean_tx_ring arises from improper memory management. When the function attempts to clean the TX ring, it may access memory that has already been freed, leading to undefined behavior. An attacker could potentially exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven, but it is crucial to address it to ensure the security and stability of the system.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The use-after-free issue in igb_clean_tx_ring within the Kernel poses a potential security risk. It is crucial to update the Linux Kernel to version v5.10.127 or later to address this vulnerability. Failure to do so may expose the system to arbitrary code execution, privilege escalation, or denial-of-service attacks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it could potentially allow an attacker to execute arbitrary code, escalate privileges, or cause a denial-of-service condition.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it in real-time to identify any open-source vulnerabilities, including this one.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version mentioned above.
There are no known exploits for this vulnerability at the moment. However, it is important to address it promptly to mitigate any potential risks.
The vulnerability details were discovered and reported by an automated system. The actual impact and attack plausibility have not been proven.
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