CVE-2025-38686

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

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/1202abad7a7ccd28c426d2844771a387b07629a4	Patch
https://git.kernel.org/stable/c/7f1101a0a181243ad587ececdffc4845f035549f	Patch
https://git.kernel.org/stable/c/aba6faec0103ed8f169be8dce2ead41fcb689446	Patch
https://git.kernel.org/stable/c/bb81c18dbd42650c844e160cafa7cbb20243a96a	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::

History

No history.

Information

Published : 2025-09-04 16:15

Updated : 2025-11-24 19:48

NVD link : CVE-2025-38686

Mitre link : CVE-2025-38686

CVE.ORG link : CVE-2025-38686

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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