CVE-2026-98691

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Tear down inactive DP tunnels when the domain is stopped

tb_stop() only tears down DMA tunnels so a DP tunnel that is still

waiting for dprx_work to complete keeps that work queued while the

routers are removed and the control channel is stopped. The work only

stops once the DPRX timeout has passed and because it requeues itself

until then the flush_workqueue() in tb_domain_remove() won't wait for its

final run. The callback then runs against a domain that is already torn

down. A reference to that domain is kept so the completion waiting for

that domain to disappear in unbind will block until the timeout is

eventually reached.

Tear down DP tunnels that are not active yet as well which also cancels

that work. Tunnels for displays that are already alive are untouched and

keep working.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References