{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80765",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.791Z",
        "datePublished": "2026-09-04T15:12:37.639Z",
        "dateUpdated": "2026-10-19T08:43:21.769Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:43:21.769Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hyperv: validate initial device info bounds\n\nThe Hyper-V synthetic HID host supplies SYNTH_HID_INITIAL_DEVICE_INFO\nmessages that contain a HID descriptor followed by the report descriptor\nbytes. mousevsc_on_receive_device_info() trusts bLength and\nwDescriptorLength without checking that the received packet contains both\nbyte ranges.\n\nA malformed host or backend message can therefore make the guest read\npast the received VMBus packet while copying the report descriptor. Pass\nthe received initial-device-info size into the parser and reject\ndescriptor lengths that exceed the packet.\n\nImpact: A malicious Hyper-V host or backend can crash a guest by sending\na short initial device-info message with an oversized HID report\ndescriptor length."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/hid-hyperv.c"
                    ],
                    "versions": [
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "e0d5d3e45e142b7ef7525654aaa54d3e986002a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "390d3d9c52a710fdc9de95a537747397c0c671d1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "8614c043b11cc35ffebd35542ab4da275f8f923d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "334271d3812ab3197c95b4593bc6745f8d189114",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "f84d777574b748b1a488723ca7be9d87a301a872",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "608f8fd8c0f7b6268da43509447802955f210aac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "2529737763cb4bcfcaf397beeea2664656c865b4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "c894143c508a7e063aab9f73c9e835ab40121283",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b95f5bcb811e3905b5376f87789da8d097fee682",
                            "lessThan": "934b7778aa7b7c8f6bb073d2a73ba3674885bae0",
                            "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-hyperv.c"
                    ],
                    "versions": [
                        {
                            "version": "3.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.267",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.218",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.185",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.154",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.106",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.47",
                            "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": "3.3",
                                    "versionEndExcluding": "5.10.267"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "5.15.218"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "6.1.185"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "6.6.154"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "6.12.106"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "6.18.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "7.1.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "7.2.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.3",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e0d5d3e45e142b7ef7525654aaa54d3e986002a6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/390d3d9c52a710fdc9de95a537747397c0c671d1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8614c043b11cc35ffebd35542ab4da275f8f923d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/334271d3812ab3197c95b4593bc6745f8d189114"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f84d777574b748b1a488723ca7be9d87a301a872"
                },
                {
                    "url": "https://git.kernel.org/stable/c/608f8fd8c0f7b6268da43509447802955f210aac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2529737763cb4bcfcaf397beeea2664656c865b4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c894143c508a7e063aab9f73c9e835ab40121283"
                },
                {
                    "url": "https://git.kernel.org/stable/c/934b7778aa7b7c8f6bb073d2a73ba3674885bae0"
                }
            ],
            "title": "HID: hyperv: validate initial device info bounds",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}