Vulnerability in io_uring: Add a Schedule Point in io_add_buffers()
Summary
GSD-2022-1000745: io_uring: add a schedule point in io_add_buffers(). Affects Kernel versions >= ddf0322db79c5984dc1a1db890f946dd19b7d6d9, < 8f3cc3c5bc43d03b5748ac4fb8d180084952c36a. No fix is published. How to fix ↓
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Background
The io_uring package is a component of the Linux Kernel that provides an interface for asynchronous I/O operations. It allows applications to efficiently handle large numbers of I/O requests. The vulnerability in question affects the io_uring package and specifically the io_add_buffers() function.
Vulnerability Detail
The vulnerability arises from a missing schedule point in the io_add_buffers() function of the io_uring package. This omission can potentially lead to a security vulnerability, although the exact impact and attack plausibility have not been proven. The vulnerability was introduced in version v5.7 of the Linux Kernel and has been fixed in version v5.16.12 by commit 8f3cc3c5bc43d03b5748ac4fb8d180084952c36a.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
In conclusion, the io_uring package in the Linux Kernel is vulnerable due to a missing schedule point in the io_add_buffers() function. To mitigate this vulnerability, it is recommended to update the Linux Kernel to version v5.16.12 or later. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The exact impact of this vulnerability is currently unknown. However, it is advisable to update to the fixed version to mitigate any potential security risks.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will provide real-time alerts for any open-source vulnerabilities.
At the time of this report, no known exploits for this vulnerability have been disclosed.
No, the recommended approach is to update the Linux Kernel to the fixed version. Manually patching the vulnerability without updating the entire Kernel may not provide complete protection.
You can refer to the vulnerability details in the Open Source Vulnerability format at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000745.json
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