CVE-2026-68429

A flaw was found in the Linux kernel's DisplayPort (DP) Multi-Stream Transport (MST) module. A race condition can occur during hotplug or link-loss events when the MST topology is being torn down while the drm_dp_mst_topology_queue_probe() function is called. This can lead to spurious kernel warnings and cause the display compositor to crash when connecting or disconnecting DP MST monitors, resulting in a denial of service.

This issue affects systems using DisplayPort Multi-Stream Transport (MST). A race between topology teardown on hotplug/link-loss and drm_dp_mst_topology_queue_probe() could trigger spurious WARN_ON assertions when the topology is torn down between the call and lock acquisition. Systems without DP MST daisy-chained displays are not affected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.