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Linux CVE-2026-89993

| EUVDEUVD-2026-80601
2026-09-16 Linux GHSA-36xx-949x-639g

Lifecycle Timeline

2
Patch available
Sep 16, 2026 - 11:03 EUVD
CVE Published
Sep 16, 2026 - 10:33 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: dw-edma: Initialize IRQ data before requesting IRQs

dw_edma_irq_request() passes struct dw_edma_irq to request_irq() before dw_edma_channel_setup() fills the back pointer. A shared interrupt can therefore enter the handler with dw_irq->dw still NULL, leading to a NULL pointer dereference.

Set the back pointer before installing each handler.

Analysis

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Initialize IRQ data before requesting IRQs dw_edma_irq_request() passes struct dw_edma_irq to request_irq() before dw_edma_channel_setup() fills the back pointer. A shared interrupt can therefore enter the handler with dw_irq->dw still NULL, leading to a NULL pointer dereference. …

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CVE-2026-89993 vulnerability details – vuln.today

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