CVE-2025-40035

high

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.

References

https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5

https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e

https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4

https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79

https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803

https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c

https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817

https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42

Details

Source: Mitre, NVD

Published: 2025-10-28

Updated: 2025-10-30

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00024