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CVE-2026-53384

kernel: serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · July 19, 2026

Updated · October 2, 2026

Description

A flaw was found in the Linux kernel's 8250_dw serial driver. When the clk_notifier_register() function fails during the probe process, the 8250 port is not properly unregistered. This oversight can lead to a use-after-free vulnerability, where previously freed memory is still referenced. An attacker could potentially exploit this to cause system instability or execute arbitrary code.

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 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-825 · Expired Pointer Dereference