Vulnerability in io_uring: Fix Overflows Checks in Provide Buffers

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000368: io_uring: fix overflows checks in provide buffers. Affects Kernel versions >= efe68c1ca8f49e8c06afd74b699411bfbb8ba1ff, < cbbc13b115b8f18e0a714d89f87fbdc499acfe2d. 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 perform I/O operations without blocking the execution of other tasks. The package is widely used in Linux-based systems and is critical for high-performance I/O operations.

Vulnerability Detail

The vulnerability in io_uring involves a lack of proper checks for overflows in provide buffers. This vulnerability can potentially be exploited by an attacker to overwrite adjacent memory regions, leading to memory corruption and potential code execution. The vulnerability was introduced in version v5.8 of the Linux Kernel and was fixed in version v5.10.37. 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 known workaround for this vulnerability at the moment.

Conclusion

The vulnerability in io_uring that allowed overflows in provide buffers has been fixed in version v5.10.37 of the Linux Kernel. It is recommended to update to this version to ensure the security and stability of systems using io_uring. For further support on vulnerability remediation, please contact DevNack.com.

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