{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98860",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.376Z",
        "datePublished": "2026-10-18T15:51:21.403Z",
        "dateUpdated": "2026-10-19T09:26:54.770Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:26:54.770Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: bpf: cast size to ssize_t when checking hid_bpf_hw_request\n\nAs reported by Sashiko:\nIf a transport driver encounters a hardware error and returns a negative\nerror code such as -EPIPE, ret is implicitly promoted to size_t when\ncompared against size. This causes the negative error code to evaluate\nas a large positive number, making the (ret > size) condition true.\n\nThis silently converts the hardware error into a success return value\nand copies the unmodified buffer back, which could leave BPF programs\noperating on uninitialized or stale data.\n\nFix this by casting size into ssize_t to return the actual negative\nerror code."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/bpf/hid_bpf_dispatch.c"
                    ],
                    "versions": [
                        {
                            "version": "d6efaa50af62fb0790dd1fd4e7e5506b46312510",
                            "lessThan": "8b85ef0f561039e249c3f883c5280a1449c6dbee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1",
                            "lessThan": "97be6396817bd3b11d06239010d27902940bfaa9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645",
                            "lessThan": "f9f808227554b2c116fd07dd2328ecd74ea3f411",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2b658c1c442ec1cd9eec5ead98d68662c40fe645",
                            "lessThan": "3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb57dae20fdf6f3069cdc07821fa3bb46de381d7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.12.78",
                            "lessThan": "6.12.113",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.20",
                            "lessThan": "6.18.56",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.10",
                            "lessThan": "6.20",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/hid/bpf/hid_bpf_dispatch.c"
                    ],
                    "versions": [
                        {
                            "version": "7.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "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": "6.12.78",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18.20",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19.10"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8b85ef0f561039e249c3f883c5280a1449c6dbee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/97be6396817bd3b11d06239010d27902940bfaa9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f9f808227554b2c116fd07dd2328ecd74ea3f411"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c"
                }
            ],
            "title": "HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}