CVE-2026-63953

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98	Patch
https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::

History

30 Oct 2026, 14:32

Type	Values Removed	Values Added
First Time		Linux linux Kernel Linux
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel:7.1:rc4:::::: cpe:2.3:o:linux:linux_kernel:7.1:rc1:::::: cpe:2.3:o:linux:linux_kernel:7.1:rc2:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:7.1:rc5:::::: cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
References	~~() https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98 -~~	() https://git.kernel.org/stable/c/24861d04f197bb651e9dfb211978271c15f75a98 - Patch
References	~~() https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453 -~~	() https://git.kernel.org/stable/c/2c6f81d58741349298f51ff697d988cb42881453 - Patch
CWE		CWE-401

Information

Published : 2026-07-19 16:17

Updated : 2026-10-30 14:32

NVD link : CVE-2026-63953

Mitre link : CVE-2026-63953

CVE.ORG link : CVE-2026-63953

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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