CVE Database›Document archive›CVE-2026-89837

CVE-2026-89837

kernel: f2fs: fix dentry folio leak in find_in_level

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 16, 2026

Updated · October 6, 2026

Description

A flaw was found in the Linux kernel's f2fs filesystem. The find_in_level function, responsible for managing file system entries, fails to release a memory reference (dentry folio) when an internal error occurs during a call to find_in_block(). This oversight leads to a memory leak, which can be exploited by a local attacker to cause resource exhaustion and potentially a Denial of Service (DoS) condition, making the system unresponsive.

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-772 · Missing Release of Resource after Effective Lifetime