CVE-2026-63953

Published: Jul 19, 2026Modified: Oct 30, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: mm/migrate_device: fix pgtable leak in migrate_vma_insert_huge_pmd_page When migrate_vma_insert_huge_pmd_page() jumps to unlock_abort due to a PMD check failure, the pgtable allocated earlier via pte_alloc_one() is never freed, causing a memory leak. Added free_abort label to release the pgtable in error path.

Affected (6)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

6 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	6.19 ≤ version < 7.0.12
Linux Linux Kernel	Version 7.1 rc1
Linux Linux Kernel	Version 7.1 rc2
Linux Linux Kernel	Version 7.1 rc3
Linux Linux Kernel	Version 7.1 rc4
Linux Linux Kernel	Version 7.1 rc5

Related CWEs

CWE-401

Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

References (2)

https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Patch

https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Patch

Timeline

No history available yet.