CVE-2026-89993

Source
https://cve.org/CVERecord?id=CVE-2026-89993
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89993.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-89993
Downstream
Published
2026-09-16T10:33:06Z
Modified
2026-09-17T03:47:20Z
Summary
dmaengine: dw-edma: Initialize IRQ data before requesting IRQs
Details

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.

Database specific
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf
Fixed
b86280b12ccf33b68b309b7cb0e4476894dfe77c
Fixed
07e50cef557def076418c67051a336e4c6bd50e1
Fixed
17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba
Fixed
d232bc6cf4562132ef50644484dfd4b23a593295
Fixed
fac202d73e7a649b7d4010325c6c6dcd9334fe65
Fixed
d91fb6c0d10dad32929dc5c6850f89df34e1bfcd
Fixed
647217abea849d3d45f8cb0b8ee5b78d50f26985

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89993.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.3.0
Fixed
5.15.221
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.188
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.157
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.110
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.51
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.2.5

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89993.json"