CVE-2026-31441
Received Received - Intake
Memory Leak in Linux Kernel dmaengine idxd Workqueue Reset

Publication date: 2026-04-22

Last updated on: 2026-05-07

Assigner: kernel.org

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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-04-22
Last Modified
2026-05-07
Generated
2026-06-16
AI Q&A
2026-04-22
EPSS Evaluated
2026-06-14
NVD
CVE-2026-31441
EUVD
EUVD-2026-24771
Affected Vendors & Products
Showing 14 associated CPEs
Vendor Product Version / Range
linux linux_kernel 5.8
linux linux_kernel 5.8
linux linux_kernel 5.8
linux linux_kernel From 5.7.10 (inc) to 5.8 (exc)
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel From 6.13 (inc) to 6.18.21 (exc)
linux linux_kernel From 6.19 (inc) to 6.19.11 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.131 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.80 (exc)
linux linux_kernel From 5.8.1 (inc) to 6.1.168 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a memory leak issue in the Linux kernel's dmaengine idxd driver. Specifically, when a workqueue (wq) is reset, the function idxd_wq_disable_cleanup() sets the workqueue type to NONE before releasing its resources. This causes the driver to incorrectly assume the workqueue is empty and that all resources have been released, leading to a memory leak.

Impact Analysis

The memory leak caused by this vulnerability can lead to inefficient use of system memory over time. This may degrade system performance or cause instability if the leaked memory accumulates significantly, especially in systems relying heavily on the dmaengine idxd driver.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-31441. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart