CVE-2026-64129

kernel: mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page

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Severity

Low

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 19, 2026

Updated · October 15, 2026

Description

A flaw was found in the Linux kernel's memory management component. This vulnerability, located in the migrate_vma_insert_huge_pmd_page function, can lead to a spinlock being permanently held if a specific address space check fails. This unreleased spinlock can cause a system deadlock, resulting in a Denial of Service (DoS) for affected systems.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime