{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-92515",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-16T12:21:13.873Z",
        "datePublished": "2026-09-17T16:10:24.159Z",
        "dateUpdated": "2026-10-19T09:04:21.819Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:04:21.819Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Preserve unique-field state across nested structs\n\nbtf_find_struct_field() initializes a fresh seen mask for every recursive\ndescent. Unique special fields in different levels of the same aggregate\ntherefore do not see one another. The duplicate fields can reach\nbtf_parse_fields(), where they trigger an invariant WARN_ON_ONCE(). A\ncrafted user BTF can consequently trigger the warning before map creation\nchecks capabilities.\n\nInitialize the seen mask once in btf_find_field() and pass the same pointer\nthrough struct, datasec, and nested-struct walks. This gives the entire field\ntraversal one shared uniqueness state."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/btf.c"
                    ],
                    "versions": [
                        {
                            "version": "64e8ee814819f21beeeda00d4119221443d77992",
                            "lessThan": "cec97102d4147e18568c93946014c4c8ebf86fcf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "64e8ee814819f21beeeda00d4119221443d77992",
                            "lessThan": "28d5f20ed022ade0fb0bfbf50b78fec782083175",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "64e8ee814819f21beeeda00d4119221443d77992",
                            "lessThan": "373a1e9366e711b89bc5e45bd6edf33ef62402cd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "64e8ee814819f21beeeda00d4119221443d77992",
                            "lessThan": "f08619f060468076e4acbdc10e0713af20d60e65",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/bpf/btf.c"
                    ],
                    "versions": [
                        {
                            "version": "6.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "6.11",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/cec97102d4147e18568c93946014c4c8ebf86fcf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/28d5f20ed022ade0fb0bfbf50b78fec782083175"
                },
                {
                    "url": "https://git.kernel.org/stable/c/373a1e9366e711b89bc5e45bd6edf33ef62402cd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f08619f060468076e4acbdc10e0713af20d60e65"
                }
            ],
            "title": "bpf: Preserve unique-field state across nested structs",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}