CVE-2026-89993

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

State: Published
Severity: Not scored
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before b86280b12ccf33b68b309b7cb0e4476894dfe77cAffected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 07e50cef557def076418c67051a336e4c6bd50e1Affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91baAffected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before d232bc6cf4562132ef50644484dfd4b23a593295Affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before fac202d73e7a649b7d4010325c6c6dcd9334fe65Affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before d91fb6c0d10dad32929dc5c6850f89df34e1bfcdAffected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 647217abea849d3d45f8cb0b8ee5b78d50f26985Affected
LinuxLinux	5.3Affected before 5.3Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before b86280b12ccf33b68b309b7cb0e4476894dfe77cAffected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 07e50cef557def076418c67051a336e4c6bd50e1Affected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91baAffected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before d232bc6cf4562132ef50644484dfd4b23a593295Affected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before fac202d73e7a649b7d4010325c6c6dcd9334fe65Affected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before d91fb6c0d10dad32929dc5c6850f89df34e1bfcdAffected
e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf to before 647217abea849d3d45f8cb0b8ee5b78d50f26985Affected

LinuxLinux

5.3Affected
before 5.3Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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