CVE-2025-39692

MEDIUM

Linux Kernel 5.15-6.1.148, 6.2-6.6.102, 6.7-6.12.43, 6.13-6.16.3 - NULL Pointer Dereference in SMB Direct Workqueue

Title source: llm

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.

References (7)

Core 7

Core References

Third Party Advisory, Mailing List

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Patch

https://git.kernel.org/stable/c/524e90e58a267dad11e23351d9e4b1f941490976

Patch

https://git.kernel.org/stable/c/212eb86f75b4d7b82f3d94aed95ba61103bccb93

Patch

https://git.kernel.org/stable/c/003e6a3150299f681f34cb189aa068018cef6a45

Patch

https://git.kernel.org/stable/c/e41e33400516702427603f8fbbec43c91ede09c0

Patch

https://git.kernel.org/stable/c/bac7b996d42e458a94578f4227795a0d4deef6fa

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Scores

CVSS v3 5.5

EPSS 0.0002

EPSS Percentile 6.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-476

Status published

Products (19)

debian/debian_linux 11.0

linux/Kernel 5.15.0 - 6.1.149linux

linux/Kernel 6.13.0 - 6.16.4linux

linux/Kernel 6.2.0 - 6.6.103linux

linux/Kernel 6.7.0 - 6.12.44linux

Linux/Linux < 5.15

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 003e6a3150299f681f34cb189aa068018cef6a45

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 212eb86f75b4d7b82f3d94aed95ba61103bccb93

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 524e90e58a267dad11e23351d9e4b1f941490976

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - bac7b996d42e458a94578f4227795a0d4deef6fa

... and 9 more

Published Sep 05, 2025

Tracked Since Feb 18, 2026