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CVE-2026-52990

kernel: fsnotify: fix inode reference leak in fsnotify_recalc_mask()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · June 24, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel. A local attacker could exploit a race condition in the fsnotify_recalc_mask() function, which fails to properly handle an inode reference. This improper handling can lead to an inode reference leak, causing tasks to hang and resulting in a Denial of Service (DoS) for 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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-911 · Improper Update of Reference Count