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

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-11 22:18
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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          "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."
        }
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    "dateReserved": "2026-05-01T14:12:55.988Z",
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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 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:35:43+00:00",
      "cve": "CVE-2026-43140",
      "id": "CVE-2026-43140",
      "initial_release_date": "2026-05-06T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: magicmouse: Do not crash on missing msc-\u003einput",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43140.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T13:40:48Z",
      "cve": "CVE-2026-43140",
      "id": "CVE-2026-43140",
      "initial_release_date": "2026-05-09T02:42:06Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "643",
      "product_status:known_not_affected": "15",
      "product_status:recommended": "287",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43140",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43140.json",
      "version": "9"
    }
  }
}



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