CVE-2021-47577
kernel: io-wq: check for wq exit after adding new worker task_work
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 19, 2024
Updated · August 5, 2026
Description
A vulnerability was found in the Linux kernel in the io-wq component where a race condition is present between the creation of a new worker and the system shutting down the work queue. This could lead to undefined behavior or crashes.
Statement
Red Hat Enterprise Linux is not impacted by this CVE, as the vulnerability in question does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue, and no further action or mitigation is necessary for systems running this operating system.
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')