CVE-2025-40035 (GCVE-0-2025-40035)
Vulnerability from cvelistv5
Published
2025-10-28 11:48
Modified
2025-10-29 13:19
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
Version: 2d56f3a32c0e62f99c043d2579840f9731fe5855
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{
  "containers": {
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          "programFiles": [
            "drivers/input/misc/uinput.c"
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          "vendor": "Linux",
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              "version": "0",
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak\n\nStruct ff_effect_compat is embedded twice inside\nuinput_ff_upload_compat, contains internal padding. In particular, there\nis a hole after struct ff_replay to satisfy alignment requirements for\nthe following union member. Without clearing the structure,\ncopy_to_user() may leak stack data to userspace.\n\nInitialize ff_up_compat to zero before filling valid fields."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-29T13:19:36.823Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42"
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          "url": "https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c"
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          "url": "https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803"
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          "url": "https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5"
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        {
          "url": "https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79"
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      "title": "Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40035",
    "datePublished": "2025-10-28T11:48:17.030Z",
    "dateReserved": "2025-04-16T07:20:57.153Z",
    "dateUpdated": "2025-10-29T13:19:36.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
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  }
}


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