CVE-2025-40035

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < 1b317796013f666ae5040edbf0f230ec61496d42affected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < 877172b97786ed1678640dff0b2d35abb328844caffected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < e63aade22a33e77b93c98c9f02db504d897a76b4affected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < 933b87c4590b42500299f00ff55f555903056803affected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < fd8a23ecbc602d00e47b27f20b07350867d0ebe5affected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < 48c96b7e9e03516936d6deba54b5553097eae817affected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < f5e1f3b85aadce74268c46676772c3e9fa79897eaffected
LinuxLinux2d56f3a32c0e62f99c043d2579840f9731fe5855 < d3366a04770eea807f2826cbdb96934dd8c9bf79affected
LinuxLinux2.6.29affected
LinuxLinux0 < 2.6.29unaffected
LinuxLinux5.4.301 <= 5.4.*unaffected
LinuxLinux5.10.246 <= 5.10.*unaffected
LinuxLinux5.15.195 <= 5.15.*unaffected
LinuxLinux6.1.156 <= 6.1.*unaffected
LinuxLinux6.6.112 <= 6.6.*unaffected
LinuxLinux6.12.53 <= 6.12.*unaffected
LinuxLinux6.17.3 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References