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CVE-2026-80782 (GCVE-0-2026-80782)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:12 – Updated: 2026-09-04 15:12
VLAI
Title
HID: magicmouse: do not keep a stale msc->input if no input is claimed
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: do not keep a stale msc->input if no input is claimed magicmouse_input_mapping() caches the first hid_input's input_dev in msc->input while the report descriptor is parsed, and the rest of the driver treats a non-NULL msc->input as proof that an input device was registered. That does not hold on the hid-input error path. If hidinput_connect() fails -- for instance because input_register_device() returns an error -- it unwinds through hidinput_disconnect(), which frees every input_dev it created, including the one cached in msc->input. The failure does not abort the probe. hid_connect() only skips the claim: if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, connect_mask & HID_CONNECT_HIDINPUT_FORCE)) hdev->claimed |= HID_CLAIMED_INPUT; and the "device has no listeners" bailout below it does not fire for this driver, which sets ->raw_event; on the USB Magic Mouse 2 / Magic Trackpad 2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore returns 0 and magicmouse_probe() continues with msc->input pointing at freed memory. Being non-NULL, it passes the "input not registered" check in probe and the NULL checks in ->raw_event and ->event, so the next input report dereferences freed memory. Clear msc->input when the HID core did not claim an input device, so the existing NULL checks cover this case as well.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < c3597923932bb90d4fc2186aef552f6677175e4a (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < e0c224c93d10ee38854fdf24c815108aedd3dcb3 (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14 (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 3d7a7bac4c75f25b2513505a0ac5ba909588ed2b (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 9bdf8c7bfd79f1090e61d28f969b32880fd77bb3 (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 15b60ade825c8ce9ec560048a4ae3747e4572be3 (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 0bf253e9ac994cb5329bc87b00bb4eeca9136791 (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 2ef16934e069d5f771e989d6ee5c3ece5042f3cd (git)
Affected: f1a9a149abc86903e81dd1b2e720f3f89874384b , < 0af3b89705688af01aa06025b84fa7a1e06ba6cc (git)
Affected: 0e55072e7c63a6569cab1447e9025d160abd9dd9 (git)
Affected: 3.8.7 , < 3.9 (semver)
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Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (semver)
Unaffected: 5.10.269 , ≤ 5.10.* (semver)
Unaffected: 5.15.218 , ≤ 5.15.* (semver)
Unaffected: 6.1.185 , ≤ 6.1.* (semver)
Unaffected: 6.6.154 , ≤ 6.6.* (semver)
Unaffected: 6.12.106 , ≤ 6.12.* (semver)
Unaffected: 6.18.47 , ≤ 6.18.* (semver)
Unaffected: 7.1.11 , ≤ 7.1.* (semver)
Unaffected: 7.2.1 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed\n\nmagicmouse_input_mapping() caches the first hid_input\u0027s input_dev in\nmsc-\u003einput while the report descriptor is parsed, and the rest of the\ndriver treats a non-NULL msc-\u003einput as proof that an input device was\nregistered.\n\nThat does not hold on the hid-input error path. If hidinput_connect()\nfails -- for instance because input_register_device() returns an error --\nit unwinds through hidinput_disconnect(), which frees every input_dev it\ncreated, including the one cached in msc-\u003einput.\n\nThe failure does not abort the probe. hid_connect() only skips the claim:\n\n\tif ((connect_mask \u0026 HID_CONNECT_HIDINPUT) \u0026\u0026 !hidinput_connect(hdev,\n\t\t\t\tconnect_mask \u0026 HID_CONNECT_HIDINPUT_FORCE))\n\t\thdev-\u003eclaimed |= HID_CLAIMED_INPUT;\n\nand the \"device has no listeners\" bailout below it does not fire for this\ndriver, which sets -\u003eraw_event; on the USB Magic Mouse 2 / Magic Trackpad\n2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore\nreturns 0 and magicmouse_probe() continues with msc-\u003einput pointing at\nfreed memory. Being non-NULL, it passes the \"input not registered\" check\nin probe and the NULL checks in -\u003eraw_event and -\u003eevent, so the next\ninput report dereferences freed memory.\n\nClear msc-\u003einput when the HID core did not claim an input device, so the\nexisting NULL checks cover this case as well."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3"
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        },
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          "url": "https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3"
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        },
        {
          "url": "https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc"
        }
      ],
      "title": "HID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed",
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    "datePublished": "2026-09-04T15:12:53.933Z",
    "dateReserved": "2026-08-26T14:34:25.792Z",
    "dateUpdated": "2026-09-04T15:12:53.933Z",
    "state": "PUBLISHED"
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    "epss": {
      "cve": "CVE-2026-80782",
      "date": "2026-09-15",
      "epss": "0.00195",
      "percentile": "0.09416"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-07T01:53:22.000Z",
      "cve": "CVE-2026-80782",
      "id": "msrc_CVE-2026-80782",
      "initial_release_date": "2026-09-07T01:53:22.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "HID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-80782.json",
      "version": "1"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80782\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-04T16:18:04.030\",\"lastModified\":\"2026-09-04T16:18:04.030\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nHID: magicmouse: do not keep a stale msc-\u003einput if no input is claimed\\n\\nmagicmouse_input_mapping() caches the first hid_input\u0027s input_dev in\\nmsc-\u003einput while the report descriptor is parsed, and the rest of the\\ndriver treats a non-NULL msc-\u003einput as proof that an input device was\\nregistered.\\n\\nThat does not hold on the hid-input error path. If hidinput_connect()\\nfails -- for instance because input_register_device() returns an error --\\nit unwinds through hidinput_disconnect(), which frees every input_dev it\\ncreated, including the one cached in msc-\u003einput.\\n\\nThe failure does not abort the probe. hid_connect() only skips the claim:\\n\\n\\tif ((connect_mask \u0026 HID_CONNECT_HIDINPUT) \u0026\u0026 !hidinput_connect(hdev,\\n\\t\\t\\t\\tconnect_mask \u0026 HID_CONNECT_HIDINPUT_FORCE))\\n\\t\\thdev-\u003eclaimed |= HID_CLAIMED_INPUT;\\n\\nand the \\\"device has no listeners\\\" bailout below it does not fire for this\\ndriver, which sets -\u003eraw_event; on the USB Magic Mouse 2 / Magic Trackpad\\n2 paths hidraw and hiddev are claimed as well. hid_hw_start() therefore\\nreturns 0 and magicmouse_probe() continues with msc-\u003einput pointing at\\nfreed memory. Being non-NULL, it passes the \\\"input not registered\\\" check\\nin probe and the NULL checks in -\u003eraw_event and -\u003eevent, so the next\\ninput report dereferences freed memory.\\n\\nClear msc-\u003einput when the HID core did not claim an input device, so the\\nexisting NULL checks cover this case as well.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/hid/hid-magicmouse.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"c3597923932bb90d4fc2186aef552f6677175e4a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"e0c224c93d10ee38854fdf24c815108aedd3dcb3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"3d7a7bac4c75f25b2513505a0ac5ba909588ed2b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"9bdf8c7bfd79f1090e61d28f969b32880fd77bb3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"15b60ade825c8ce9ec560048a4ae3747e4572be3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"0bf253e9ac994cb5329bc87b00bb4eeca9136791\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"2ef16934e069d5f771e989d6ee5c3ece5042f3cd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1a9a149abc86903e81dd1b2e720f3f89874384b\",\"lessThan\":\"0af3b89705688af01aa06025b84fa7a1e06ba6cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0e55072e7c63a6569cab1447e9025d160abd9dd9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3.8.7\",\"lessThan\":\"3.9\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/hid/hid-magicmouse.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.269\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.218\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.185\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.154\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.106\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.47\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.11\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.1\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T17:17:47Z",
      "cve": "CVE-2026-80782",
      "id": "CVE-2026-80782",
      "initial_release_date": "2026-09-05T00:27:35Z",
      "product_status:known_affected": "320",
      "product_status:known_not_affected": "33",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80782",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80782.json",
      "version": "3"
    }
  }
}



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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.

Sightings

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.