ghsa-8c35-rp3g-c86r
Vulnerability from github
Published
2025-10-28 12:30
Modified
2025-10-29 15:31
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40035"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-28T12:15:37Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-8c35-rp3g-c86r",
  "modified": "2025-10-29T15:31:53Z",
  "published": "2025-10-28T12:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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