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CVE-2023-53291

kernel: Linux kernel: Denial of Service due to improper thread termination in rcuscale module

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 16, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel. A local attacker can exploit this vulnerability by loading and then unloading the rcuscale module while a specific test case is active. This improper handling of thread termination can lead to a use-after-free condition, causing a kernel crash and resulting in a Denial of Service (DoS).

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-366 · Race Condition within a Thread