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CVE-2025-40035
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Description

In the Linux kernel, the following vulnerability has been resolved: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Struct ff_effect_compat is embedded twice inside uinput_ff_upload_compat, contains internal padding. In particular, there is a hole after struct ff_replay to satisfy alignment requirements for the following union member. Without clearing the structure, copy_to_user() may leak stack data to userspace. Initialize ff_up_compat to zero before filling valid fields.

INFO

Published Date :

Oct. 28, 2025, 12:15 p.m.

Last Modified :

Oct. 28, 2025, 12:15 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-40035 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
Initialize memory structures to prevent stack data leaks to userspace.
  • Zero-initialize the uinput_ff_upload_compat structure.
  • Ensure all fields are properly cleared before use.
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-2025-40035.

URL Resource
https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817
https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803
https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79
https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4
https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e
https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-40035 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-2025-40035 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-2025-40035 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-2025-40035 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. 28, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Struct ff_effect_compat is embedded twice inside uinput_ff_upload_compat, contains internal padding. In particular, there is a hole after struct ff_replay to satisfy alignment requirements for the following union member. Without clearing the structure, copy_to_user() may leak stack data to userspace. Initialize ff_up_compat to zero before filling valid fields.
    Added Reference https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817
    Added Reference https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803
    Added Reference https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79
    Added Reference https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4
    Added Reference https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e
    Added Reference https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5
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.