CVE-2026-98319

/// Technical description

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

drm: Fix drm_pending_vblank_event leak in error path for out_fence_ptr

When an out_fence_ptr is provided but DRM_MODE_PAGE_FLIP_EVENT is not

set, a drm_pending_vblank_event will be allocated. If later, there is an

allocation failure or another failure at setup_out_fence(), that event

will not have base.fence set and it will not be released at

complete_signaling().

Release the event and set crtc_state->event to NULL just like in the

DRM_MODE_PAGE_FLIP_EVENT case when there is a failure at

drm_event_reserve_init(). That is, prepare_signaling() releases the

event and there is nothing to be done at complete_signaling(). Use

drm_event_cancel_free() as that will also undo drm_event_reserve_init()

in case it has been called.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References