Medium severity · published Sep 5, 2025
CVE-2025-39692
smb: server: split ksmbd_rdma_stop_listening() out of ksmbd_rdma_destroy()
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.15 before 6.1.149; 6.2 before 6.6.103; 6.7 before 6.12.44; 6.13 before 6.16.4; 6.17; 6.17 · source: NVD
LI
Linux · Linux
0626e6641f6b467447c81dd7678a69c66f7746cf before 524e90e58a267dad11e23351d9e4b1f941490976; 0626e6641f6b467447c81dd7678a69c66f7746cf before 212eb86f75b4d7b82f3d94aed95ba61103bccb93; 0626e6641f6b467447c81dd7678a69c66f7746cf before 003e6a3150299f681f34cb189aa068018cef6a45; 0626e6641f6b467447c81dd7678a69c66f7746cf before e41e33400516702427603f8fbbec43c91ede09c0; 0626e6641f6b467447c81dd7678a69c66f7746cf before bac7b996d42e458a94578f4227795a0d4deef6fa; 5.15 · source: vendor
DL
Debian Linux · Debian
11.0 · source: NVD
SC
SIMATIC CN 4100 · Siemens
before V5.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-39692
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-39692
Patch
https://git.kernel.org/stable/c/003e6a3150299f681f34cb189aa068018cef6a45
Patch
https://git.kernel.org/stable/c/212eb86f75b4d7b82f3d94aed95ba61103bccb93
Patch
https://git.kernel.org/stable/c/524e90e58a267dad11e23351d9e4b1f941490976
Patch
https://git.kernel.org/stable/c/bac7b996d42e458a94578f4227795a0d4deef6fa
Patch
https://git.kernel.org/stable/c/e41e33400516702427603f8fbbec43c91ede09c0
Mailing List
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
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