Linux Kernel Free IRQ Handling Vulnerability in fsl-edma DMA Engine

Vulnerability

A vulnerability has been identified in the Linux kernel's DMA engine component, specifically within the fsl-edma driver. This issue arises when the driver is removed from the platform, as it fails to properly free interrupt requests (IRQs), particularly the error IRQ on the i.MX9 platform. The oversight can lead to a kernel panic, accompanied by a warning about the improper IRQ handling. The vulnerability is present in Linux kernel version 6.12.0-rc7.

Impact

The vulnerability can cause a kernel panic due to improper handling of interrupt requests, leading to a system crash.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
4.0
remediation
0.0
relevance
0.0
threat
3.2
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.