What’s Vulnerable › Vulnerabilities

CVE-2026-31441: dmaengine: idxd: Fix memory leak when a wq is reset

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-22 · updated 2026-10-15
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix memory leak when a wq is reset idxd_wq_disable_cleanup() which is called from the reset path for a workqueue, sets the wq type to NONE, which for other parts of the driver mean that the wq is empty (all its resources were released). Only set the wq type to NONE after its resources are released.

Affected products

• Linux kernel: from 5.7.10 before 5.8; from 5.8.1 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11 — fixed in 5.8, 6.1.168, 6.12.80, 6.18.21, 6.19.11, 6.6.131

How to fix

Upgrade to a fixed version: Linux kernel 5.8, 6.1.168, 6.12.80, 6.18.21. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0c3d3ac57e3c52b570b8c695903306bff07e04c8
• https://git.kernel.org/stable/c/39c1504e0e76bcfb93991fd94288a83e05d13b51
• https://git.kernel.org/stable/c/54d77cc0c40ca2f894859dc7b3c52997574f1a2a
• https://git.kernel.org/stable/c/a16098a2f0c11ee5e04e23aa7478ca1fcfb0f658
• https://git.kernel.org/stable/c/a9e7815d38629bcf59d3005001f1f315424a58de
• https://git.kernel.org/stable/c/d9cfb5193a047a92a4d3c0e91ea4cc87c8f7c478
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-457936.html

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