CVE-2023-37454

kernel: udf: use-after-free write in udf_close_lvid

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Severity

Low

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · May 24, 2023

Updated · November 22, 2025

Description

A use-after-free flaw was found in the UDF file system in the Linux kernel. This issue could allow a malicious user to crash the system, resulting in a denial of service.

Statement

This flaw can only be triggered by directly writing to the UDF filesystem's underlying block device while it is mounted. Because block devices have restrictive permissions by default, this flaw has been rated as having a security impact of Low.

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 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-416 · Use After Free