GHSA-Q3VC-67Q5-PP3G

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-13 21:31
VLAI
Details

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

HID: magicmouse: Do not crash on missing msc->input

Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, msc->input stays NULL, leading to a crash at a later time.

Detect this condition in the input_configured() hook and reject the device.

This is not supposed to happen with actual magic mouse devices, but can be provoked by imposing as a magic mouse USB device.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-43140"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:31Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: Do not crash on missing msc-\u003einput\n\nFake USB devices can send their own report descriptors for which the\ninput_mapping() hook does not get called.  In this case, msc-\u003einput stays NULL,\nleading to a crash at a later time.\n\nDetect this condition in the input_configured() hook and reject the device.\n\nThis is not supposed to happen with actual magic mouse devices, but can be\nprovoked by imposing as a magic mouse USB device.",
  "id": "GHSA-q3vc-67q5-pp3g",
  "modified": "2026-05-13T21:31:57Z",
  "published": "2026-05-06T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43140"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/165912d4321c692321c02793068d30700b4e0f1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17abd396548035fbd6179ee1a431bd75d49676a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/243e1165eb03aca97d87aafa9c3130593837a1c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36c83c1329dd881f290f7df2feadfb9a21775108"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bbe266272d86c0657e8253600f3d5b74fb7b2ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/922bd3e498a4b8e445def6e6ffea2ad3682ad516"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6a3860241fbb556fd72332fa31c5e787004413b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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