{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-47120",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-03-04T18:12:48.838Z",
        "datePublished": "2024-03-15T20:14:26.578Z",
        "dateUpdated": "2026-05-11T13:48:26.150Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T13:48:26.150Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: fix NULL-deref on disconnect\n\nCommit 9d7b18668956 (\"HID: magicmouse: add support for Apple Magic\nTrackpad 2\") added a sanity check for an Apple trackpad but returned\nsuccess instead of -ENODEV when the check failed. This means that the\nremove callback will dereference the never-initialised driver data\npointer when the driver is later unbound (e.g. on USB disconnect)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/hid-magicmouse.c"
                    ],
                    "versions": [
                        {
                            "version": "9d7b18668956c411a422d04c712994c5fdb23a4b",
                            "lessThan": "368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d7b18668956c411a422d04c712994c5fdb23a4b",
                            "lessThan": "b5d013c4c76b276890135b5d32803c4c63924b77",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d7b18668956c411a422d04c712994c5fdb23a4b",
                            "lessThan": "9cf27473f21913a3eaf4702dd2a25415afd5f33f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9d7b18668956c411a422d04c712994c5fdb23a4b",
                            "lessThan": "4b4f6cecca446abcb686c6e6c451d4f1ec1a7497",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/hid-magicmouse.c"
                    ],
                    "versions": [
                        {
                            "version": "4.20",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.20",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.125",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.43",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.12.10",
                            "lessThanOrEqual": "5.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "5.4.125"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "5.10.43"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "5.12.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "5.13"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b5d013c4c76b276890135b5d32803c4c63924b77"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cf27473f21913a3eaf4702dd2a25415afd5f33f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4b4f6cecca446abcb686c6e6c451d4f1ec1a7497"
                }
            ],
            "title": "HID: magicmouse: fix NULL-deref on disconnect",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "title": "CISA ADP Vulnrichment",
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2021-47120",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-03-19T15:24:16.763009Z"
                            }
                        }
                    }
                ],
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-04T17:13:25.270Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:24:39.876Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/b5d013c4c76b276890135b5d32803c4c63924b77",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/9cf27473f21913a3eaf4702dd2a25415afd5f33f",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/4b4f6cecca446abcb686c6e6c451d4f1ec1a7497",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}