CVE-2022-4127

kernel: io_uring: NULL pointer dereference in io_files_update_with_index_alloc

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 9, 2022

Updated · November 21, 2025

Description

A NULL pointer dereference issue was discovered in the Linux kernel in io_files_update_with_index_alloc. A local user could use this flaw to potentially crash the system causing a denial of service.

Statement

Red Hat Enterprise Linux is not affected by this flaw as io_uring (CONFIG_IO_URING) is not enabled in any current shipping kernels.

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

CWE-476 · NULL Pointer Dereference