UnratedFix available
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.246, 5.15.195, 5.4.301, 6.1.156, 6.12.53, 6.17.3, 6.6.112
- CVEs
- CVE-2025-40035
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 22:38 UTC · Revision 1
Source evidence
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
core-osv · Original sourcePublished 28 Oct 2025, 11:48 UTC
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.
osv:CVE-2025-40035
Kernel
Fixed versions: 5.4.301, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3
Complete source record
{
"id": "41d86f33c2b00baf81d9f086352017da22fca199b8377bf753ea4eaa45581ffe",
"url": "https://osv.dev/vulnerability/CVE-2025-40035",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak",
"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.",
"evidence": "osv:CVE-2025-40035",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
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"prerequisites": [],
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"evidence": "/affected/1/ranges"
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{
"value": "5.10.246",
"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
},
{
"value": "6.1.156",
"evidence": "/affected/1/ranges"
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{
"value": "6.6.112",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.53",
"evidence": "/affected/1/ranges"
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{
"value": "6.17.3",
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"affected_versions": []
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"severity": "unknown",
"structured": {
"id": "CVE-2025-40035",
"aliases": [
"CVE-2025-40035"
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"affected": [
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"type": "GIT",
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{
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{
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{
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{
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40035.json"
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],
"modified": "2026-10-28T02:30:31.942792324Z",
"provider": "osv",
"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",
"https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4",
"https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e",
"https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40035.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-40035",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40035.json"
}
},
"related_cves": [
{
"value": "CVE-2025-40035",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 499166,
"published_at": "2025-10-28T11:48:17.03+00:00"
}