CVE-2026-98319

Received Received - Intake

BaseFortify

Publication date: 2026-10-06

Last updated on: 2026-10-19

Assigner: kernel.org

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-06

Last Modified

2026-10-19

Generated

2026-10-19

AI Q&A

2026-10-06

EPSS Evaluated

2026-10-18

NVD

CVE-2026-98319

EUVD

EUVD-2026-93304

Affected Vendors & Products

Vendor	Product	Version / Range
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	92c715fca907686f5298220ece53423e38ba3aed
Linux	Linux	4cd462c7f2b6fcc208aebf44f2c831681feaa925
Linux	Linux	4.9.10
Linux	Linux	4.10

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel involves a memory leak in the Direct Rendering Manager (DRM) subsystem. When an out_fence_ptr is provided but certain flags are not set, a pending vblank event is allocated. If a subsequent failure occurs during setup, this event is not properly released, leading to a resource leak.

Detection Guidance

This vulnerability is specific to the Linux kernel's DRM (Direct Rendering Manager) subsystem and relates to a memory leak in error handling paths. Detection requires checking kernel logs for DRM-related errors or memory leaks during display operations. Commands like dmesg | grep -i drm or journalctl -k | grep -i drm may help identify issues. Ensure your kernel is updated to a patched version.

Impact Analysis

This vulnerability could lead to system instability or resource exhaustion due to un-released memory. It may cause applications using DRM to crash or behave unpredictably if the leaked events accumulate over time.

Mitigation Strategies

Apply the latest kernel updates from your Linux distribution to ensure the patched version is installed. Reboot the system after updating. Monitor kernel logs for any DRM-related errors post-update. If you cannot update immediately, avoid using out_fence_ptr in DRM operations as a temporary workaround.

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