CVE-2025-40035

Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak

State: Published
Severity: Not scored
Published: Oct 28, 2025
Updated: May 11, 2026
Reserved: Apr 16, 2025

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 1b317796013f666ae5040edbf0f230ec61496d42Affected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 877172b97786ed1678640dff0b2d35abb328844cAffected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before e63aade22a33e77b93c98c9f02db504d897a76b4Affected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 933b87c4590b42500299f00ff55f555903056803Affected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before fd8a23ecbc602d00e47b27f20b07350867d0ebe5Affected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 48c96b7e9e03516936d6deba54b5553097eae817Affected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before f5e1f3b85aadce74268c46676772c3e9fa79897eAffected 2d56f3a32c0e62f99c043d2579840f9731fe5855 to before d3366a04770eea807f2826cbdb96934dd8c9bf79Affected
LinuxLinux	2.6.29Affected before 2.6.29Not affected 5.4.301 through 5.4.Not affected 5.10.246 through 5.10.Not affected 5.15.195 through 5.15.Not affected 6.1.156 through 6.1.Not affected 6.6.112 through 6.6.Not affected 6.12.53 through 6.12.Not affected 6.17.3 through 6.17.*Not affected 6.18 and laterNot affected

Product

Versions

LinuxLinux

2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 1b317796013f666ae5040edbf0f230ec61496d42Affected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 877172b97786ed1678640dff0b2d35abb328844cAffected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before e63aade22a33e77b93c98c9f02db504d897a76b4Affected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 933b87c4590b42500299f00ff55f555903056803Affected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before fd8a23ecbc602d00e47b27f20b07350867d0ebe5Affected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before 48c96b7e9e03516936d6deba54b5553097eae817Affected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before f5e1f3b85aadce74268c46676772c3e9fa79897eAffected
2d56f3a32c0e62f99c043d2579840f9731fe5855 to before d3366a04770eea807f2826cbdb96934dd8c9bf79Affected

LinuxLinux

2.6.29Affected
before 2.6.29Not affected
5.4.301 through 5.4.*Not affected
5.10.246 through 5.10.*Not affected
5.15.195 through 5.15.*Not affected
6.1.156 through 6.1.*Not affected
6.6.112 through 6.6.*Not affected
6.12.53 through 6.12.*Not affected
6.17.3 through 6.17.*Not affected
6.18 and laterNot affected

References

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