CVE-2025-38369

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

dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using

Running IDXD workloads in a container with the /dev directory mounted can trigger a call trace or even a kernel panic when the parent process of the container is terminated.

This issue occurs because, under certain configurations, Docker does not properly propagate the mount replica back to the original mount point.

In this case, when the user driver detaches, the WQ is destroyed but it still calls destroy_workqueue() attempting to completes all pending work. It's necessary to check wq->wq and skip the drain if it no longer exists.

This vulnerability in the Intel IDXD DMA engine driver results from a missing check before draining a potentially destroyed workqueue object. When running workloads in containers with /dev mounted, the driver may attempt to call drain_workqueue() on a NULL pointer after the parent process exits, leading to a kernel panic.

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.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.