CVE-2026-97431
Received Received - Intake

AMD Display Driver DPMS-On Null Pointer Dereference

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid DPMS-on for phantom stream [Why & How] Calling dc_update_planes_and_stream separately for stream and its phantom stream causes a NULL pointer dereference, since the phantom is destroyed on the first call. Skip the call for phantom streams.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-97431
EUVD
EUVD-2026-86044

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 in the Linux kernel involves a NULL pointer dereference caused by calling dc_update_planes_and_stream separately for a stream and its phantom stream. The phantom stream is destroyed during the first call, leading to a crash when the second call attempts to access it.

Detection Guidance

This vulnerability is specific to the Linux kernel's AMD display driver. Detection requires checking kernel logs for NULL pointer dereference errors related to drm/amd/display or phantom stream handling. Use commands like dmesg | grep -i 'drm/amd/display\|phantom stream\|NULL pointer' to search for relevant errors.

Impact Analysis

This vulnerability could cause system crashes or instability in systems running affected Linux kernel versions, particularly those using AMD display drivers. It may lead to display malfunctions or unexpected reboots.

Mitigation Strategies

Update your Linux kernel to the latest stable version that includes the fix for this vulnerability. Monitor kernel updates from your distribution vendor and apply patches promptly. If immediate patching is not possible, consider disabling AMD display features temporarily as a workaround.

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