CVE-2023-53864

kernel: drm/mxsfb: Disable overlay plane in mxsfb_plane_overlay_atomic_disable()

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · December 9, 2025

Updated · June 30, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/mxsfb: Disable overlay plane in mxsfb_plane_overlay_atomic_disable()

When disabling overlay plane in mxsfb_plane_overlay_atomic_update(), overlay plane's framebuffer pointer is NULL. So, dereferencing it would cause a kernel Oops(NULL pointer dereferencing). Fix the issue by disabling overlay plane in mxsfb_plane_overlay_atomic_disable() instead.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE not specified