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CVE-2025-68246
ksmbd: close accepted socket when per-IP limit rejects connection
Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: close accepted socket when per-IP limit rejects connection When the per-IP connection limit is exceeded in ksmbd_kthread_fn(), the code sets ret = -EAGAIN and continues the accept loop without closing the just-accepted socket. That leaks one socket per rejected attempt from a single IP and enables a trivial remote DoS. Release client_sk before continuing. This bug was found with ZeroPath.

INFO

Published Date :

Dec. 16, 2025, 3:15 p.m.

Last Modified :

Dec. 16, 2025, 3:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-68246 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.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Close the accepted socket when the per-IP connection limit is exceeded to prevent resource leaks.
  • Ensure the accepted socket is closed when the per-IP limit is exceeded.
  • Release the client socket before continuing the accept loop.
  • Apply the latest kernel updates or patches.
  • Monitor system resource usage.
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-2025-68246.

URL Resource
https://git.kernel.org/stable/c/35521b5a7e8a184548125f4530552101236dcda1
https://git.kernel.org/stable/c/4587a7826be1ae0190dba10ff70b46bb0e3bc7d3
https://git.kernel.org/stable/c/5746b2a0f5eb3d79667b3c51fe849bd62464220e
https://git.kernel.org/stable/c/7a3c7154d5fc05956a8ad9e72ecf49e21555bfca
https://git.kernel.org/stable/c/98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-68246 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-2025-68246 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).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-68246 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-68246 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.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Dec. 16, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: close accepted socket when per-IP limit rejects connection When the per-IP connection limit is exceeded in ksmbd_kthread_fn(), the code sets ret = -EAGAIN and continues the accept loop without closing the just-accepted socket. That leaks one socket per rejected attempt from a single IP and enables a trivial remote DoS. Release client_sk before continuing. This bug was found with ZeroPath.
    Added Reference https://git.kernel.org/stable/c/35521b5a7e8a184548125f4530552101236dcda1
    Added Reference https://git.kernel.org/stable/c/4587a7826be1ae0190dba10ff70b46bb0e3bc7d3
    Added Reference https://git.kernel.org/stable/c/5746b2a0f5eb3d79667b3c51fe849bd62464220e
    Added Reference https://git.kernel.org/stable/c/7a3c7154d5fc05956a8ad9e72ecf49e21555bfca
    Added Reference https://git.kernel.org/stable/c/98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.