#VU93212 Resource management error in Linux kernel - CVE-2021-46942

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Main Vulnerability Database Vulnerabilities #VU93212

#VU93212 Resource management error in Linux kernel - CVE-2021-46942

Published: June 24, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU93212
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-46942
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the io_uring_del_task_file(), io_sq_thread(), tctx_inflight(), io_sqpoll_cancel_sync(), __io_uring_files_cancel() and io_uring_cancel_sqpoll() functions in fs/io_uring.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

External links