CVE-2026-43140 (GCVE-0-2026-43140)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-07 17:14
VLAI?
Title
HID: magicmouse: Do not crash on missing msc->input
Summary
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2 (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 165912d4321c692321c02793068d30700b4e0f1a (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < f6a3860241fbb556fd72332fa31c5e787004413b (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 243e1165eb03aca97d87aafa9c3130593837a1c2 (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 922bd3e498a4b8e445def6e6ffea2ad3682ad516 (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 5bbe266272d86c0657e8253600f3d5b74fb7b2ae (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 36c83c1329dd881f290f7df2feadfb9a21775108 (git)
Affected: 64eb105d7f92fa48798106ac0d8bf17668eb2524 , < 17abd396548035fbd6179ee1a431bd75d49676a7 (git)
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    Linux Linux Affected: 2.6.37
Unaffected: 0 , < 2.6.37 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-magicmouse.c"
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              "status": "unaffected",
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        }
      ],
      "cpeApplicability": [
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      "descriptions": [
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          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-07T17:14:26.238Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/165912d4321c692321c02793068d30700b4e0f1a"
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      ],
      "title": "HID: magicmouse: Do not crash on missing msc-\u003einput",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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    "cveId": "CVE-2026-43140",
    "datePublished": "2026-05-06T11:27:25.536Z",
    "dateReserved": "2026-05-01T14:12:55.988Z",
    "dateUpdated": "2026-05-07T17:14:26.238Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-05-10",
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      "percentile": "0.0704"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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