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CVE-2024-39508

kernel: io_uring/io-wq: Use set_bit() and test_bit() at worker->flags

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 12, 2024

Updated · October 29, 2026

Description

A vulnerability was found in the Linux kernel's io_uring subsystem within the io_wq handling functions, where the issue stems from concurrent access to worker->flags, which can lead to data races when multiple tasks manipulate this structure simultaneously, which result in crashes, impacting the reliability of asynchronous I/O operations.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-820 · Missing Synchronization