ghsa-3qmv-4mq3-fcr8
Vulnerability from github
Published
2025-12-24 15:30
Modified
2025-12-24 15:30
Details

In the Linux kernel, the following vulnerability has been resolved:

usb: idmouse: fix an uninit-value in idmouse_open

In idmouse_create_image, if any ftip_command fails, it will go to the reset label. However, this leads to the data in bulk_in_buffer[HEADER..IMGSIZE] uninitialized. And the check for valid image incurs an uninitialized dereference.

Fix this by moving the check before reset label since this check only be valid if the data after bulk_in_buffer[HEADER] has concrete data.

Note that this is found by KMSAN, so only kernel compilation is tested.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50733"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:15:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: idmouse: fix an uninit-value in idmouse_open\n\nIn idmouse_create_image, if any ftip_command fails, it will\ngo to the reset label. However, this leads to the data in\nbulk_in_buffer[HEADER..IMGSIZE] uninitialized. And the check\nfor valid image incurs an uninitialized dereference.\n\nFix this by moving the check before reset label since this\ncheck only be valid if the data after bulk_in_buffer[HEADER]\nhas concrete data.\n\nNote that this is found by KMSAN, so only kernel compilation\nis tested.",
  "id": "GHSA-3qmv-4mq3-fcr8",
  "modified": "2025-12-24T15:30:33Z",
  "published": "2025-12-24T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50733"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1eae30c0113dde7522088231584d62415011a035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20b8c456df584ebb2387dc23d40ebe4ff334417c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6163a5ae097bc78fa26c243fb384537e25610fd7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7dad42032f68718259590b0cc7654e9a95ff9762"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/adad163d1cff248a5df9f7cec50158e6ca89f33b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3304a6df957cc89a0590cb505388d659bf3db4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8bbae3236ab7dccc66c42bc3f7cdbcfc0786e54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bce2b0539933e485d22d6f6f076c0fcd6f185c4c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f589b667567fde4f81d6e6c40f42b9f2224690ea"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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