# CVE-2025-38369: dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using

Status: published. Published: 2025-07-25. Updated: 2026-11-05.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ bfe1d56091c1a404b3d4ce7e9809d745fc4453bb; < e0051a3daa8b2cb318b03b2f9317c3e40855847a (affected, git); ≥ bfe1d56091c1a404b3d4ce7e9809d745fc4453bb; < 98fd66c8ba77e3a7137575f610271014bc0e701f (affected, git); ≥ bfe1d56091c1a404b3d4ce7e9809d745fc4453bb; < aee7a7439f8c0884da87694a401930204a57128f (affected, git); ≥ bfe1d56091c1a404b3d4ce7e9809d745fc4453bb; < 17502e7d7b7113346296f6758324798d536c31fd (affected, git). Source: CNA: Linux
- Linux / Linux: 5.6 (affected); ≥ 0; < 5.6 (unaffected, semver); ≥ 6.6.96; ≤ 6.6.* (unaffected, semver); ≥ 6.12.36; ≤ 6.12.* (unaffected, semver); ≥ 6.15.5; ≤ 6.15.* (unaffected, semver); ≥ 6.16; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.19% as of 2026-11-05; percentile 8.44%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/e0051a3daa8b2cb318b03b2f9317c3e40855847a (CNA: Linux)

- https://git.kernel.org/stable/c/98fd66c8ba77e3a7137575f610271014bc0e701f (CNA: Linux)

- https://git.kernel.org/stable/c/aee7a7439f8c0884da87694a401930204a57128f (CNA: Linux)

- https://git.kernel.org/stable/c/17502e7d7b7113346296f6758324798d536c31fd (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2025-38369; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2025-38369; retrieved 2026-11-05; source updated Not reported

Revision: 2319fc9f09b070f4cae43437223a7503084e96043f807295c505e75533d2461e

Canonical: https://y2.dev/cve/CVE-2025-38369

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