CVE-2025-39825

MEDIUM EPSS 1.1%
Published Sep 16, 20259mo ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Sep 16, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
1.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.13  –  <6.1.150
linuxlinux_kernel*≥6.2  –  <6.6.104
linuxlinux_kernel*≥6.7  –  <6.12.45
linuxlinux_kernel*≥6.13  –  <6.16.5
linuxlinux_kernel6.17any
debiandebian_linux11.0any

References 7

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747
    Patch