Vulnerability in io_uring: ensure task_work gets run as part of cancelations
Summary
GSD-2021-1002602: io_uring: ensure task_work gets run as part of cancelations. Affects Kernel versions < 8e12976c0c19ebc14b60046b1348c516a74c25a2. No fix is published. How to fix ↓
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Background
The vulnerability affects the Kernel package in the Linux ecosystem. The Kernel is the core component of the operating system that manages system resources and provides an interface for applications to interact with the hardware. The io_uring subsystem in the Kernel is responsible for asynchronous I/O operations. This vulnerability specifically impacts the task_work mechanism within io_uring.
Vulnerability Detail
The vulnerability in io_uring allows for the improper handling of cancelations, potentially leading to a denial of service or other security issues. When canceling an I/O operation, the task_work associated with the operation may not be executed, resulting in resource leaks or incomplete cleanup. Attackers may exploit this vulnerability to exhaust system resources or cause instability. The vulnerability has been fixed in Linux Kernel version v5.15.8 by commit 8e12976c0c19ebc14b60046b1348c516a74c25a2.
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 io_uring can lead to denial of service and other security issues. It is crucial to update the Linux Kernel to version v5.15.8 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The vulnerability can potentially lead to a denial of service or other security issues by allowing resource leaks or incomplete cleanup.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the tool will provide real-time monitoring and alerts for open-source vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v5.15.8 by commit 8e12976c0c19ebc14b60046b1348c516a74c25a2.
Unfortunately, there is no specific workaround mentioned for this vulnerability. It is recommended to update the Kernel as soon as possible.
You can refer to the vulnerability details in the GSD Database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002602.json) for more information.
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