{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80783",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.792Z",
        "datePublished": "2026-09-04T15:12:54.859Z",
        "dateUpdated": "2026-10-19T08:43:38.543Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:43:38.543Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()\n\nmagicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack\ntwo touch reports into one, by splitting the packet and calling itself on\neach half. The only guard against runaway recursion is a \"size < 1\" check,\nwhich stops zero-sized calls but does not bound the recursion depth.\n\nA malicious HID device that matches this driver can send a report starting\nwith DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level\nconsumes two bytes and recurses on the remainder, so an incoming report of\nup to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That\neasily exhausts the 16 KiB kernel stack, leading to a stack overflow: a\npanic with CONFIG_VMAP_STACK, or memory corruption without it.\n\nA double report only ever wraps two normal reports; it is never\nlegitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a\nrecursive call so the recursion depth is bounded to two, while all valid\npackets keep being parsed exactly as before."
                }
            ],
            "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": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "26c45abed62536aabf4033fb6d64cf72e93374e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "8a10a624996f16628234306b46f0cf36707d78bd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "d16df755b4493b6d37803c628b2c621d096796a8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "bec338b07beb883726b32192c8f01c601bc76fda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "70589b0c005db003f6d8ae4db3c4d54fed7b83e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "a33a596d3ad8dfe6c96a368097a028abeee16c17",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "d095de37f78c5f32a4252ef0f99b84ba76550b86",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a462230e16acc8664145216da3c928d03556691a",
                            "lessThan": "db8d634128d2ba88d79c0b601e983ebe14bb0519",
                            "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": "2.6.37",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.37",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.220",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.187",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.156",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.108",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.49",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.11",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.1",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "2.6.37",
                                    "versionEndExcluding": "5.15.220"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "6.1.187"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "6.6.156"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "6.12.108"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "6.18.49"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "7.1.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "7.2.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.37",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86"
                },
                {
                    "url": "https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519"
                }
            ],
            "title": "HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}