CVE-2025-40035

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.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-25)

Published

2025-10-28

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42
• https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817
• https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c
• https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803
• https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79

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