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Linux Kernel CXL Memory Leak Vulnerability in Error Handling Path

Vulnerability

A memory leak vulnerability has been identified in the Linux kernel's CXL (Compute Express Link) subsystem. The issue arises in the error handling path of the 'afu_allocate_irqs()' function, where a 'bitmap_zalloc()' operation is not properly balanced by a corresponding 'bitmap_free()'. This oversight can lead to resource leaks.

Impact

Exploitation of this vulnerability causes a memory leak, which can degrade system performance over time by exhausting available memory resources.

Added: Jun 18, 2025, 7:49 PM
Updated: Jun 18, 2025, 7:49 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
5.3
remediation
0.0
relevance
0.2
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.