CVE-2025-38369: linux kernel Use-After-Free — Fix

Description

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.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.6 — 6.6.96
linux	linux_kernel	6.7 — 6.12.36
linux	linux_kernel	6.13 — 6.15.5

References

Advisories & Patches

https://git.kernel.org/stable/c/17502e7d7b7113346296f6758324798d536c31fd https://git.kernel.org/stable/c/98fd66c8ba77e3a7137575f610271014bc0e701f https://git.kernel.org/stable/c/aee7a7439f8c0884da87694a401930204a57128f https://git.kernel.org/stable/c/e0051a3daa8b2cb318b03b2f9317c3e40855847a

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38369? +

CVE-2025-38369 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-38369? +

CVE-2025-38369 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-38369? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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