CVE-2025-39692 Details
Description
In the Linux kernel, the following vulnerability has been resolved: smb: server: split ksmbd_rdma_stop_listening() out of ksmbd_rdma_destroy() We can't call destroy_workqueue(smb_direct_wq); before stop_sessions()! Otherwise already existing connections try to use smb_direct_wq as a NULL pointer.
A vulnerability in the Linux kernel's SMB server implementation can lead to a NULL pointer dereference. This issue arises in the RDMA (Remote Direct Memory Access) handling of the SMB server. The vulnerability is present in the stable versions of the Linux kernel.
Users can upgrade to the latest stable version of the Linux kernel, where this vulnerability has been addressed. Instructions for upgrading the Linux kernel can be found in the official Linux documentation or through the package management system of the respective Linux distribution.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert-portal.siemens.com/productcert/html/ssa-032379.html | siemens-SADP | |
| https://git.kernel.org/stable/c/003e6a3150299f681f34cb189aa068018cef6a45 | kernel.org | Patch |
| https://git.kernel.org/stable/c/212eb86f75b4d7b82f3d94aed95ba61103bccb93 | kernel.org | Patch |
| https://git.kernel.org/stable/c/524e90e58a267dad11e23351d9e4b1f941490976 | kernel.org | Patch |
| https://git.kernel.org/stable/c/bac7b996d42e458a94578f4227795a0d4deef6fa | kernel.org | Patch |
| https://git.kernel.org/stable/c/e41e33400516702427603f8fbbec43c91ede09c0 | kernel.org | Patch |
| https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html | CVE | Mailing ListThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 6.1.149 >= 6.2, < 6.6.103 >= 6.7, < 6.12.44 >= 6.13, < 6.16.4 6.17 rc1 6.17 rc2 |
CPE
Remediation
| |
| debian debian linux | 11.0 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | siemens-SADP |
| May 12, 2026 | CVE Modified | siemens-SADP |
| Jan 8, 2026 | Initial Analysis | [email protected] |
| Nov 3, 2025 | CVE Modified | CVE |
| Sep 5, 2025 | New CVE Received | kernel.org |