CVE-2023-53391

kernel: Linux kernel: Memory leak in shmem's ramfs-based tmpfs leads to denial of service

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 18, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel's shared memory (shmem) component, specifically within its ramfs-based temporary file system (tmpfs) implementation. A local user could exploit this vulnerability due to improper memory deallocation. This oversight can lead to a memory leak, potentially causing a Denial of Service (DoS) by exhausting system resources.

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