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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 6.1.150 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2Patch
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2Patch
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358Patch
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144cPatch
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
FAQ
What is CVE-2025-39825?
CVE-2025-39825 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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...
How severe is CVE-2025-39825?
CVE-2025-39825 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-39825?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.