CVE-2026-80705
Received Received - Intake

DRM AMD Display Phantom Plane Allocation Failure

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check if dml21_add_phantom_plane() is successful Verify that the phantom plane was allocated to avoid a later segfault. (cherry picked from commit 5adb54abe5a8e82cbff7f8806db30a5f4924329f)

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-09-18
AI Q&A
2026-08-28
EPSS Evaluated
2026-09-15
NVD
CVE-2026-80705
EUVD
EUVD-2026-67440

Affected Vendors & Products

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

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a Linux kernel vulnerability in the AMD display driver (drm/amd/display). It involves a missing check for the success of the dml21_add_phantom_plane() function, which allocates a phantom plane. Without verifying the allocation, a later segfault could occur due to accessing unallocated memory.

Detection Guidance

This vulnerability is specific to the Linux kernel's AMD display driver (drm/amd/display). Detection requires checking for kernel logs or crashes related to the phantom plane allocation failure in the display subsystem. Monitor kernel logs for segfaults or errors in amdgpu/dc components.

Impact Analysis

If exploited, this could cause system crashes (segfaults) when using AMD graphics. It may lead to denial-of-service conditions or unexpected application terminations, particularly in graphical applications or desktop environments.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a Linux kernel memory management issue that could lead to a segfault. Compliance impact would depend on system-specific implementation and whether the vulnerability is exploited in a way that compromises data integrity or availability.

Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for CVE-2026-80705. This vulnerability is related to the AMD display driver, so ensure the drm/amd/display module is updated.

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