CVE-2026-64129

MediumCVSS 5.5/10Last modified Aug 13, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page

When check_stable_address_space() fails after the PMD spinlock has been acquired via pmd_lock(), the code jumps directly to the abort label, bypassing the spin_unlock() call in unlock_abort. This causes the PMD spinlock to be permanently held, leading to a deadlock.

Change the goto target from abort to unlock_abort to ensure the spinlock is always released on this error path.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

No affected versions have been published.

Timeline

Published
Jul 19, 2026
Last modified
Aug 13, 2026
NVD status
Analyzed

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CVE-2026-64129: Medium severity, CVSS 5.5 | Vulnix