Medium severity · published Feb 18, 2026
CVE-2026-23228
smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
On kthread_run() failure in ksmbd_tcp_new_connection(), the transport is
freed via free_transport(), which does not decrement active_num_conn,
leaking this counter.
Replace free_transport() with ksmbd_tcp_disconnect().
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)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.15.91 before 5.15.201; 6.1.9 before 6.1.164; 6.2.1 before 6.6.125; 6.7 before 6.12.72; 6.13 before 6.18.11; 6.19 before 6.19.1; +4 more · source: NVD
LI
Linux · Linux
4210c3555db4b38bade92331b153e583261f05f9 before 6dd2645cf080a75be31fa66063c7332b291f46f0; d5d7847e57ac69fa99c18b363a34419bcdb5a281 before 7ddd69cd1338c6197e1b6b19cec60d99c8633e4f; 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 before 787769c8cc50416af7b8b1a36e6bcd6aaa7680aa; 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 before baf664fc90a6139a39a58333e4aaa390c10d45dc; 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 before cd25e0d809531a67e9dd53b19012d27d2b13425f; 0d0d4680db22eda1eea785c47bbf66a9b33a8b16 before 599271110c35f6b16e2e4e45b9fbd47ed378c982; +4 more · source: vendor
RR
RUGGEDCOM RST2428P · Siemens
before V4.0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23228
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23228
Patch
https://git.kernel.org/stable/c/599271110c35f6b16e2e4e45b9fbd47ed378c982
Patch
https://git.kernel.org/stable/c/6dd2645cf080a75be31fa66063c7332b291f46f0
Patch
https://git.kernel.org/stable/c/77ffbcac4e569566d0092d5f22627dfc0896b553
Patch
https://git.kernel.org/stable/c/787769c8cc50416af7b8b1a36e6bcd6aaa7680aa
Patch
https://git.kernel.org/stable/c/7ddd69cd1338c6197e1b6b19cec60d99c8633e4f
Patch
https://git.kernel.org/stable/c/baf664fc90a6139a39a58333e4aaa390c10d45dc
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