CVE-2026-98319 drm: Fix drm_pending_vblank_event leak in error path for out_fence_ptr
A memory leak in the Linux kernel DRM subsystem allows local attackers to cause denial of service via resource exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98319?
CVE-2026-98319 is a memory corruption vulnerability in Linux, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-98319?
How do I fix CVE-2026-98319?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-98319 being exploited?
There is no known exploitation of CVE-2026-98319 in the wild and no public exploit code.
Sources
Also known as AZL-106398, BELL-CVE-2026-98319, DEBIAN-CVE-2026-98319, GHSA-hr58-jv8x-qqg3, UBUNTU-CVE-2026-98319.