CVE-2026-98608: drm/virtio: fix object leak in virtio_gpu_resource_create_ioctl()
drm/virtio: fix object leak in virtiogpuresourcecreateioctl()
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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Fixed in 6.6.159.1-1 - Upgrade
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ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1 - Compensating control
In virtio_gpu_resource_create_ioctl(), replace drm_gem_object_release() with drm_gem_object_put() on the drm_gem_handle_create() error path.
Event History
Frequently Asked Questions
Under what condition does the leak occur?
The leak occurs when virtio_gpu_resource_create_ioctl() reaches an error from drm_gem_handle_create(). On that path, the owned GEM object reference is not properly dropped, preventing cleanup of the virtio GPU object and associated resources.
What resources can remain allocated if the affected error path is triggered?
The virtio_gpu_object, its pages and scatter-gather table, the resource ID, and the corresponding host-side resource can be leaked.
What is the remediation?
Apply the kernel fix that replaces drm_gem_object_release() with drm_gem_object_put() on the drm_gem_handle_create() error path, so the object's free callback can run.