CVE-2026-23228
smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
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().
INFO
Published Date :
Feb. 18, 2026, 4:22 p.m.
Last Modified :
Feb. 18, 2026, 5:51 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-23228
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the patch to ksmbd_tcp_new_connection().
- Replace free_transport() with ksmbd_tcp_disconnect().
- Ensure active_num_conn is decremented correctly.
- Test connection handling after the fix.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23228.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23228 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23228
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-23228 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23228 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 18, 2026
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/599271110c35f6b16e2e4e45b9fbd47ed378c982 Added Reference https://git.kernel.org/stable/c/787769c8cc50416af7b8b1a36e6bcd6aaa7680aa Added Reference https://git.kernel.org/stable/c/baf664fc90a6139a39a58333e4aaa390c10d45dc Added Reference https://git.kernel.org/stable/c/cd25e0d809531a67e9dd53b19012d27d2b13425f