CVE-2025-39825

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

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/24b9ed739c8c5b464d983e12cf308982f3ae93c2	Patch
https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2	Patch
https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358	Patch
https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c	Patch
https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747	Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	Third Party Advisory Mailing List

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

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-09-16 13:16

Updated : 2026-01-16 20:37

NVD link : CVE-2025-39825

Mitre link : CVE-2025-39825

CVE.ORG link : CVE-2025-39825

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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