CVE-2025-39825 - CVE House
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Status published Unknown CVE-2025-39825

smb: client: fix race with concurrent opens in rename(2)

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
78c09634f7dc061a3bd09704cdbebb3762a45cdf, 5.13, 0, 6.1.150, 6.6.104, 6.12.45, 6.16.5, 6.17

Timeline

Official Publish: September 16th, 2025
Last Modified: June 11th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.