Linux Kernel Workqueue Memory Leak Vulnerability in DMA Engine

A memory leak vulnerability has been identified in the Linux kernel's DMA engine, specifically within the Intel Integrated Accelerator (IDX) driver. This issue arises when a workqueue is reset, as the cleanup process improperly manages the workqueue's resource state. The vulnerability is present in the Linux kernel stable tree.

Impact

The vulnerability leads to a memory leak, where resources allocated for a workqueue are not properly released, potentially causing increased memory usage and degradation of system performance over time.

Reproduction

The vulnerability can be reproduced by resetting a workqueue managed by the Intel IDX driver. During this process, the workqueue's type is incorrectly set to 'NONE' before its resources are fully released, causing a memory leak.

Remediation

Users can apply the latest patches available in the Linux kernel stable repository to address this vulnerability.