CVE-2023-53400

kernel: Linux kernel: ALSA HDA denial of service via array overflow

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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 · October 10, 2026

Description

A flaw was found in the Linux kernel's Advanced Linux Sound Architecture (ALSA) High Definition Audio (HDA) component. A local user could exploit this vulnerability by providing specially crafted 9.1 surround channel names, leading to an array overflow in the get_line_out_pfx() function. This can cause a system crash, resulting in a denial of service.

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-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')