CVE-2026-68241

A flaw was found in the Linux kernel's DisplayPort Multi-Stream Transport (MST) subsystem. An unbounded loop in the intel_dp_check_mst_status() function, responsible for servicing interrupts from a sink device, can lead to a system becoming unresponsive. A malicious or faulty DisplayPort MST sink device could exploit this to trigger a Denial of Service (DoS) condition.

This issue affects systems using Intel i915 DisplayPort MST. intel_dp_check_mst_status() could loop indefinitely servicing sink interrupts from a stuck device, causing soft lockup. Systems without Intel graphics or DP MST 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.

To mitigate this issue, prevent the i915 module from loading. See https://access.redhat.com/solutions/41278 for instructions.