CVE-2026-43300
Received Received - Intake

Null-pointer Dereference in Linux Kernel DRM Panel Driver

Publication date: 2026-05-08

Last updated on: 2026-05-08

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/panel: Fix a possible null-pointer dereference in jdi_panel_dsi_remove() In jdi_panel_dsi_remove(), jdi is explicitly checked, indicating that it may be NULL: if (!jdi) mipi_dsi_detach(dsi); However, when jdi is NULL, the function does not return and continues by calling jdi_panel_disable(): err = jdi_panel_disable(&jdi->base); Inside jdi_panel_disable(), jdi is dereferenced unconditionally, which can lead to a NULL-pointer dereference: struct jdi_panel *jdi = to_panel_jdi(panel); backlight_disable(jdi->backlight); To prevent such a potential NULL-pointer dereference, return early from jdi_panel_dsi_remove() when jdi is NULL.

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Meta Information

Published
2026-05-08
Last Modified
2026-05-08
Generated
2026-07-09
AI Q&A
2026-05-08
EPSS Evaluated
2026-07-08
NVD
CVE-2026-43300
EUVD
EUVD-2026-28570

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a potential null-pointer dereference in the Linux kernel's drm/panel component, specifically in the function jdi_panel_dsi_remove().

The function checks if a pointer named 'jdi' is NULL and calls mipi_dsi_detach(dsi) if it is. However, it does not return early and continues to call jdi_panel_disable() using the 'jdi' pointer.

Inside jdi_panel_disable(), the 'jdi' pointer is dereferenced without checking if it is NULL, which can lead to a NULL-pointer dereference and potentially cause a crash or undefined behavior.

The fix involves returning early from jdi_panel_dsi_remove() when 'jdi' is NULL to prevent this issue.

Impact Analysis

A NULL-pointer dereference in the Linux kernel can cause the affected system to crash or behave unpredictably.

This may lead to denial of service conditions where the system or device becomes unresponsive or requires a reboot.

Depending on the environment, this could disrupt normal operations or services relying on the kernel's drm/panel functionality.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the issue in jdi_panel_dsi_remove() has been fixed. The fix involves returning early from the function when the jdi pointer is NULL to prevent a NULL-pointer dereference.

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