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CVE-2025-39942
ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size
Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.

INFO

Published Date :

Oct. 4, 2025, 8:15 a.m.

Last Modified :

Oct. 6, 2025, 2:56 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-39942 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
Update the Linux kernel to resolve the ksmbd vulnerability.
  • Update the Linux kernel to the latest version.
  • Apply vendor-provided patches for ksmbd.
  • Verify the fix is implemented correctly.
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-2025-39942.

URL Resource
https://git.kernel.org/stable/c/196a3a7676d726ee67621ea2bf3b7815ac2685b4
https://git.kernel.org/stable/c/9644798294c7287e65a7b26e35aa6d2ce3345bcc
https://git.kernel.org/stable/c/c64b915bb3d9339adcae5db4be2c35ffbef5e615
https://git.kernel.org/stable/c/d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce
https://git.kernel.org/stable/c/e1868ba37fd27c6a68e31565402b154beaa65df0
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-39942 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-2025-39942 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-2025-39942 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-2025-39942 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

    Oct. 04, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.
    Added Reference https://git.kernel.org/stable/c/196a3a7676d726ee67621ea2bf3b7815ac2685b4
    Added Reference https://git.kernel.org/stable/c/9644798294c7287e65a7b26e35aa6d2ce3345bcc
    Added Reference https://git.kernel.org/stable/c/c64b915bb3d9339adcae5db4be2c35ffbef5e615
    Added Reference https://git.kernel.org/stable/c/d3cb3f209d35c44b7ee74f77ed27ebb28995b9ce
    Added Reference https://git.kernel.org/stable/c/e1868ba37fd27c6a68e31565402b154beaa65df0
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.