CVE-2022-1998

kernel: fanotify misuses fd_install() which could lead to use-after-free

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Severity

Moderate

Red Hat Product Security

6.4

CVSS 3.1

Review impact separately from score.

Published · January 27, 2022

Updated · February 19, 2026

Description

A use-after-free flaw was found in the Linux kernel’s File System notify functionality in the way a user triggers the copy_info_records_to_user() function call to fail in copy_event_to_user(). This flaw allows a local user to crash or potentially escalate their privileges on the 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 · 6.4
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free