CVE-2025-38369
dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using
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dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using
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.
Reserved 2025-04-16 | Published 2025-07-25 | Updated 2025-07-25 | Assigner Linuxgit.kernel.org/...c/e0051a3daa8b2cb318b03b2f9317c3e40855847a
git.kernel.org/...c/98fd66c8ba77e3a7137575f610271014bc0e701f
git.kernel.org/...c/aee7a7439f8c0884da87694a401930204a57128f
git.kernel.org/...c/17502e7d7b7113346296f6758324798d536c31fd
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