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CVE-2025-39754

Severity CVSS v4.0:
Pending analysis
Type:
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Publication date:
11/09/2025
Last modified:
26/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mm/smaps: fix race between smaps_hugetlb_range and migration<br /> <br /> smaps_hugetlb_range() handles the pte without holdling ptl, and may be<br /> concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). <br /> The race is as follows.<br /> <br /> smaps_hugetlb_range migrate_pages<br /> huge_ptep_get<br /> remove_migration_ptes<br /> folio_unlock<br /> pfn_swap_entry_folio<br /> BUG_ON<br /> <br /> To fix it, hold ptl lock in smaps_hugetlb_range().

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
4.70
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.4 (including) 6.12.43 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.15.11 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.16 (including) 6.16.2 (excluding)
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools