1. Home
  2. Vulnerabilities
  3. CVE-2025-40021
0.0
NA
CVE-2025-40021
tracing: dynevent: Add a missing lockdown check on dynevent
Description

In the Linux kernel, the following vulnerability has been resolved: tracing: dynevent: Add a missing lockdown check on dynevent Since dynamic_events interface on tracefs is compatible with kprobe_events and uprobe_events, it should also check the lockdown status and reject if it is set.

INFO

Published Date :

Oct. 24, 2025, 1:15 p.m.

Last Modified :

Oct. 27, 2025, 1:20 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-40021 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
Apply kernel updates to enforce lockdown checks for dynamic event interface.
  • Update the Linux kernel to the latest stable version.
  • Ensure lockdown security is properly configured.
  • Verify dynamic event interface lockdown checks.
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-2025-40021.

URL Resource
https://git.kernel.org/stable/c/07b1f63b5f86765793fab44d3d4c2be681cddafb
https://git.kernel.org/stable/c/0d41604d2d53c1abe27fefb54b37a8f6642a4d74
https://git.kernel.org/stable/c/3887f3814c0e770e6b73567fe0f83a2c01a6470c
https://git.kernel.org/stable/c/456c32e3c4316654f95f9d49c12cbecfb77d5660
https://git.kernel.org/stable/c/573b1e39edfcb7b4eecde0f1664455a1f4462eee
https://git.kernel.org/stable/c/b47c4e06687a5a7b6c6ef4bd303fcfe4430b26bb
https://git.kernel.org/stable/c/f3ac1f4eaba58e57943efa3e8b8d71fa7aab0abf
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40021 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-2025-40021 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-2025-40021 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-2025-40021 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. 24, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: tracing: dynevent: Add a missing lockdown check on dynevent Since dynamic_events interface on tracefs is compatible with kprobe_events and uprobe_events, it should also check the lockdown status and reject if it is set.
    Added Reference https://git.kernel.org/stable/c/07b1f63b5f86765793fab44d3d4c2be681cddafb
    Added Reference https://git.kernel.org/stable/c/0d41604d2d53c1abe27fefb54b37a8f6642a4d74
    Added Reference https://git.kernel.org/stable/c/3887f3814c0e770e6b73567fe0f83a2c01a6470c
    Added Reference https://git.kernel.org/stable/c/456c32e3c4316654f95f9d49c12cbecfb77d5660
    Added Reference https://git.kernel.org/stable/c/573b1e39edfcb7b4eecde0f1664455a1f4462eee
    Added Reference https://git.kernel.org/stable/c/b47c4e06687a5a7b6c6ef4bd303fcfe4430b26bb
    Added Reference https://git.kernel.org/stable/c/f3ac1f4eaba58e57943efa3e8b8d71fa7aab0abf
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.