CVE-2026-90298

kernel: drm/sun4i: tcon: Drop TCON TOP device reference

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 6, 2026

Description

A flaw was found in the drm/sun4i tcon component of the Linux kernel. The of_find_device_by_node() function takes a device reference that is not properly released after the multiplexer (mux) configuration succeeds. This improper handling of device references can lead to a resource leak, potentially causing system instability or a Denial of Service (DoS) over time due to resource exhaustion.

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