CVE-2026-89993
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 16, 2026
First seenSep 16, 2026
How to fix
Update
- Linux Linuxb86280b12ccf33b68b309b7cb0e4476894dfe77c, 07e50cef557def076418c67051a336e4c6bd50e1, 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba, d232bc6cf4562132ef50644484dfd4b23a593295, fac202d73e7a649b7d4010325c6c6dcd9334fe65, d91fb6c0d10dad32929dc5c6850f89df34e1bfcd, 647217abea849d3d45f8cb0b8ee5b78d50f26985 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < b86280b12ccf33b68b309b7cb0e4476894dfe77c, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < 07e50cef557def076418c67051a336e4c6bd50e1, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < d232bc6cf4562132ef50644484dfd4b23a593295, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < fac202d73e7a649b7d4010325c6c6dcd9334fe65, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < d91fb6c0d10dad32929dc5c6850f89df34e1bfcd, e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf ≤ v < 647217abea849d3d45f8cb0b8ee5b78d50f26985, 5.3 | b86280b12ccf33b68b309b7cb0e4476894dfe77c, 07e50cef557def076418c67051a336e4c6bd50e1, 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba, d232bc6cf4562132ef50644484dfd4b23a593295, fac202d73e7a649b7d4010325c6c6dcd9334fe65, d91fb6c0d10dad32929dc5c6850f89df34e1bfcd, 647217abea849d3d45f8cb0b8ee5b78d50f26985 |
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