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Linux Kernel RZ-DMAC Device Leak Vulnerability on Probe Failure

Vulnerability

A vulnerability in the Linux kernel's DMA engine for the RZ-DMAC controller has been addressed. This issue involved a device reference leak that occurred when the probe process failed, such as in cases of probe deferral. The vulnerability has been fixed by ensuring that the reference taken during the device lookup is properly released, even when the probe encounters an error.

Impact

The vulnerability could lead to a device reference leak, potentially causing resource management issues.

Added: Jan 31, 2026, 12:35 PM
Updated: Jan 31, 2026, 12:35 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
7.7
relevance
2.5
threat
3.2
urgency
2.9
incentive
0.0

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