VDB-330263 · CVE-2025-40035 · Nessus 271891

Linux Kernel up to 6.17.2 particular copy_to_user initialization

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5.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.15.194/6.1.155/6.6.111/6.12.52/6.17.2 and classified as critical. Affected is the function copy_to_user of the component particular. The manipulation leads to initialization. This vulnerability is listed as CVE-2025-40035. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.194/6.1.155/6.6.111/6.12.52/6.17.2. It has been rated as critical. This issue affects the function copy_to_user of the component particular. The manipulation with an unknown input leads to a initialization vulnerability. Using CWE to declare the problem leads to CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. The impact remains unknown. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2025-40035 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 271891 (Linux Distros Unpatched Vulnerability : CVE-2025-40035), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3 or 6.18-rc1 eliminates this vulnerability. Applying the patch e63aade22a33e77b93c98c9f02db504d897a76b4/933b87c4590b42500299f00ff55f555903056803/fd8a23ecbc602d00e47b27f20b07350867d0ebe5/48c96b7e9e03516936d6deba54b5553097eae817/f5e1f3b85aadce74268c46676772c3e9fa79897e/d3366a04770eea807f2826cbdb96934dd8c9bf79 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (271891) and CERT Bund (WID-SEC-2025-2431). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Google Container-Optimized OS
Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
IBM QRadar SIEM
SUSE openSUSE
Open Source Linux Kernel
RESF Rocky Linux
Microsoft Azure
Dell NetWorker
Dell ECS

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒