Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38686

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/09/2025
Last modified:
24/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry<br /> <br /> When UFFDIO_MOVE encounters a migration PMD entry, it proceeds with<br /> obtaining a folio and accessing it even though the entry is swp_entry_t. <br /> Add the missing check and let split_huge_pmd() handle migration entries. <br /> While at it also remove unnecessary folio check.<br /> <br /> [surenb@google.com: remove extra folio check, per David]

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.8 (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