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

Published Apr 22, 2026
·
Updated

dmaengine: idxd: Fix memory leak when a wq is reset

Affected Software

16 affected componentsFixes available
Linux Linux kernel
Microsoft azl3 kernel 6.6.130.1-3
Linux Linux kernel>=5.7.10<5.8
Linux Linux kernel>=5.8.1<6.1.168
Linux Linux kernel>=6.2<6.6.131
Linux Linux kernel>=6.7<6.12.80
Linux Linux kernel>=6.13<6.18.21
Linux Linux kernel>=6.19<6.19.11
Linux Linux kernel=5.8
Linux Linux kernel=5.8-rc6
Linux Linux kernel=5.8-rc7
Linux Linux kernel=7.0-rc1
Linux Linux kernel=7.0-rc2
Linux Linux kernel=7.0-rc3
Linux Linux kernel=7.0-rc4
Linux Linux kernel=7.0-rc5

Event History

Apr 22, 2026
CVE Published
via MITRE·01:53 PM
Data Sourced
via MITRE·01:53 PM
Description
Data Sourced
via NVD·02:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Apr 23, 2026
Data Sourced
via Microsoft·08:06 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What conditions are required to trigger this issue?

The issue occurs when an idxd workqueue is reset. The affected cleanup path can mark the workqueue as empty before its resources have actually been released, resulting in a memory leak.

2

Is this remotely exploitable?

The supplied CVSS vector identifies local access, low attack complexity, and low privileges as required, with no user interaction. It does not indicate a remote attack vector.

3

What is the practical impact?

The vulnerability affects availability: repeated triggering of the affected workqueue reset path can leak memory. The supplied CVSS vector indicates no confidentiality or integrity impact.

4

Which software is identified as affected?

The data identifies the Linux kernel and Microsoft azl3 kernel 6.6.130.1-3. The vulnerability has been resolved, but no fixed version is provided in the supplied data.

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