CVEvulnerability
CVE-2026-89993
- Status
- Received
- Published
- 2026-09-16
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
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.
References
- https://git.kernel.org/stable/c/07e50cef557def076418c67051a336e4c6bd50e1 git.kernel.org
- https://git.kernel.org/stable/c/17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba git.kernel.org
- https://git.kernel.org/stable/c/647217abea849d3d45f8cb0b8ee5b78d50f26985 git.kernel.org
- https://git.kernel.org/stable/c/b86280b12ccf33b68b309b7cb0e4476894dfe77c git.kernel.org
- https://git.kernel.org/stable/c/d232bc6cf4562132ef50644484dfd4b23a593295 git.kernel.org
- https://git.kernel.org/stable/c/d91fb6c0d10dad32929dc5c6850f89df34e1bfcd git.kernel.org
- https://git.kernel.org/stable/c/fac202d73e7a649b7d4010325c6c6dcd9334fe65 git.kernel.org