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Unrated severityNVD Advisory· Published Feb 26, 2025· Updated May 16, 2025

drm/plane: Move range check for format_count earlier

CVE-2021-47659

Description

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

drm/plane: Move range check for format_count earlier

While the check for format_count > 64 in __drm_universal_plane_init() shouldn't be hit (it's a WARN_ON), in its current position it will then leak the plane->format_types array and fail to call drm_mode_object_unregister() leaking the modeset identifier. Move it to the start of the function to avoid allocating those resources in the first place.

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Affected products

136

Patches

Vulnerability mechanics

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