CVE-2021-4023

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

A flaw was found in the io-workqueue implementation in the Linux kernel versions prior to 5.15-rc1. The kernel can panic when an improper cancellation operation triggers the submission of new io-uring operations during a shortage of free space. This flaw allows a local user with permissions to execute io-uring requests to possibly crash the system.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-200

Affected software

No affected versions have been published.

Timeline

Published: Mar 10, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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