UnratedFix available
dmaengine: dw-edma: Initialize IRQ data before requesting IRQs
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.15.221, 6.1.188, 6.12.110, 6.18.51, 6.6.157, 7.2.5
- CVEs
- CVE-2026-89993
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 20:58 UTC · Revision 1
Source evidence
dmaengine: dw-edma: Initialize IRQ data before requesting IRQs
core-osv · Original sourcePublished 16 Sept 2026, 10:33 UTC
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.
osv:CVE-2026-89993
Kernel
Fixed versions: 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5
Complete source record
{
"id": "a936fe8e1ca6f56efaedaf73bb1f9e349c464e100919458529750619f3b677ea",
"url": "https://osv.dev/vulnerability/CVE-2026-89993",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "dmaengine: dw-edma: Initialize IRQ data before requesting IRQs",
"summary": "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.",
"evidence": "osv:CVE-2026-89993",
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"modified": "2026-10-28T02:30:51.502486480Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/07e50cef557def076418c67051a336e4c6bd50e1",
"https://git.kernel.org/stable/c/17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba",
"https://git.kernel.org/stable/c/647217abea849d3d45f8cb0b8ee5b78d50f26985",
"https://git.kernel.org/stable/c/b86280b12ccf33b68b309b7cb0e4476894dfe77c",
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"https://git.kernel.org/stable/c/d91fb6c0d10dad32929dc5c6850f89df34e1bfcd",
"https://git.kernel.org/stable/c/fac202d73e7a649b7d4010325c6c6dcd9334fe65",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-89993",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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}
},
"related_cves": [
{
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 520381,
"published_at": "2026-09-16T10:33:06.611+00:00"
}