CVE-2025-39825

Advisory lineage Upstream: 0 Downstream: 41
Modified
Published: 16 Sept 2025, 13:00
Last modified:12 May 2026, 12:07

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Sept 2025, 13:00
Published
Vulnerability first disclosed
12 May 2026, 12:07
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 78c09634f7dc061a3bd09704cdbebb3762a45cdf, < c9e7de284da0be5b44dbe79d71573f9f7f9b144c | ≥ 78c09634f7dc061a3bd09704cdbebb3762a45cdf, < 24b9ed739c8c5b464d983e12cf308982f3ae93c2 | ≥ 78c09634f7dc061a3bd09704cdbebb3762a45cdf, < c9991af5e09924f6f3b3e6996a5e09f9504b4358 | ≥ 78c09634f7dc061a3bd09704cdbebb3762a45cdf, < 289f945acb20b9b54fe4d13895e44aa58965ddb2 | ≥ 78c09634f7dc061a3bd09704cdbebb3762a45cdf, < d84291fc7453df7881a970716f8256273aca5747 | 5.13

  • linux•linux_kernel

    ≥ 5.13, < 6.1.150 | ≥ 6.2, < 6.6.104 | ≥ 6.7, < 6.12.45 | ≥ 6.13, < 6.16.5 | 6.17:rc1

References (7)