UnratedFix available

HID: magicmouse: do not keep a stale msc->input if no input is claimed

Type: advisorySources: OSV

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.

Products: Kernel
Affected versions: Not specified
Fixed versions: 5.10.269, 5.15.218, 6.1.185, 6.12.106, 6.18.47, 6.6.154, 7.1.11, 7.2.1
CVEs: CVE-2026-80782
Confirmed fixed CVEs: Not specified
Updated in this feed: 6 Nov 2026, 02:47 UTC · Revision 1

Source evidence

HID: magicmouse: do not keep a stale msc->input if no input is claimed

core-osv · Original source

Published 4 Sept 2026, 15:12 UTC

osv:CVE-2026-80782

Kernel

Fixed versions: 5.10.269, 5.15.218, 6.1.185, 6.6.154, 6.12.106, 6.18.47, 7.1.11, 7.2.1

Complete source record

{
  "id": "8662e36501136b8b2c2301643083ade20b7d99e6ebcd66c8e6f4c08a9d6a6aed",
  "url": "https://osv.dev/vulnerability/CVE-2026-80782",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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.",
    "evidence": "osv:CVE-2026-80782",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.269",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.218",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.185",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.154",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.106",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.47",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.11",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-80782",
      "aliases": [
        "CVE-2026-80782"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f1a9a149abc86903e81dd1b2e720f3f89874384b"
                },
                {
                  "fixed": "c3597923932bb90d4fc2186aef552f6677175e4a"
                },
                {
                  "fixed": "e0c224c93d10ee38854fdf24c815108aedd3dcb3"
                },
                {
                  "fixed": "403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14"
                },
                {
                  "fixed": "3d7a7bac4c75f25b2513505a0ac5ba909588ed2b"
                },
                {
                  "fixed": "9bdf8c7bfd79f1090e61d28f969b32880fd77bb3"
                },
                {
                  "fixed": "15b60ade825c8ce9ec560048a4ae3747e4572be3"
                },
                {
                  "fixed": "0bf253e9ac994cb5329bc87b00bb4eeca9136791"
                },
                {
                  "fixed": "2ef16934e069d5f771e989d6ee5c3ece5042f3cd"
                },
                {
                  "fixed": "0af3b89705688af01aa06025b84fa7a1e06ba6cc"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3.8.7"
                },
                {
                  "fixed": "3.9"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0e55072e7c63a6569cab1447e9025d160abd9dd9"
                }
              ]
            }
          ],
          "versions": [
            "v3.8.13",
            "v3.8.12",
            "v3.8.11",
            "v3.8.10",
            "v3.8.9",
            "v3.8.8",
            "v3.8.7"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80782.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.9.0"
                },
                {
                  "fixed": "5.10.269"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.218"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.185"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.154"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.106"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.47"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.11"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.2.0"
                },
                {
                  "fixed": "7.2.1"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80782.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.304206410Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0af3b89705688af01aa06025b84fa7a1e06ba6cc",
        "https://git.kernel.org/stable/c/0bf253e9ac994cb5329bc87b00bb4eeca9136791",
        "https://git.kernel.org/stable/c/15b60ade825c8ce9ec560048a4ae3747e4572be3",
        "https://git.kernel.org/stable/c/2ef16934e069d5f771e989d6ee5c3ece5042f3cd",
        "https://git.kernel.org/stable/c/3d7a7bac4c75f25b2513505a0ac5ba909588ed2b",
        "https://git.kernel.org/stable/c/403cc9bd6ccb9fbe68d501c3236e5a6dd5504e14",
        "https://git.kernel.org/stable/c/9bdf8c7bfd79f1090e61d28f969b32880fd77bb3",
        "https://git.kernel.org/stable/c/c3597923932bb90d4fc2186aef552f6677175e4a",
        "https://git.kernel.org/stable/c/e0c224c93d10ee38854fdf24c815108aedd3dcb3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80782.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80782",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80782.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-80782",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 514408,
  "published_at": "2026-09-04T15:12:53.933+00:00"
}