Bug 2466793 (CVE-2026-43064)

Summary: CVE-2026-43064 kernel: dmaengine: idxd: Fix not releasing workqueue on .release()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's dmaengine IDXD driver. The workqueue associated with a Data Streaming Accelerator (DSA) or In-Memory Analytics Accelerator (IAA) device is not properly released when the object is freed. This resource leak may lead to a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-05-05 17:03:05 UTC
In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: Fix not releasing workqueue on .release()

The workqueue associated with an DSA/IAA device is not released when
the object is freed.