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Linux Kernel Memory Leak Vulnerability in Device Page Migration

Vulnerability

A memory leak vulnerability has been identified in the Linux kernel's handling of zone device pages during migration. When the function 'migrate_vma_insert_huge_pmd_page()' encounters a PMD check failure, it fails to free the allocated page table, leading to a memory leak. This issue affects the Linux kernel stable tree.

Impact

The vulnerability causes a memory leak, which can lead to increased memory usage and potential exhaustion of system resources.

Added: Jul 19, 2026, 7:39 PM
Updated: Jul 19, 2026, 7:39 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
0.6
exploitability
4.0
remediation
7.7
relevance
9.7
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.