CVE-2026-89993
kernel: dmaengine: dw-edma: Initialize IRQ data before requesting IRQs
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 16, 2026
Updated · October 22, 2026
Description
A flaw was found in the Linux kernel's dmaengine: dw-edma driver. A local attacker could exploit a timing issue where interrupt data is not fully initialized before an interrupt is requested. This could lead to a NULL pointer dereference when a shared interrupt handler is invoked, causing the system to crash and resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference