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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42 cve-icon cve-icon
https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817 cve-icon cve-icon
https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c cve-icon cve-icon
https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803 cve-icon cve-icon
https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79 cve-icon cve-icon
https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4 cve-icon cve-icon
https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e cve-icon cve-icon
https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102811-CVE-2025-40035-9c37@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-40035 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-40035 cve-icon
History

Wed, 29 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
References

Wed, 29 Oct 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 29 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 28 Oct 2025 12:00:00 +0000

Type Values Removed Values 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.
Title Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-29T13:19:36.823Z

Reserved: 2025-04-16T07:20:57.153Z

Link: CVE-2025-40035

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-28T12:15:37.363

Modified: 2025-10-30T15:05:32.197

Link: CVE-2025-40035

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-28T00:00:00Z

Links: CVE-2025-40035 - Bugzilla