{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98854",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.376Z",
        "datePublished": "2026-10-18T15:51:06.167Z",
        "dateUpdated": "2026-10-21T12:57:33.107Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:57:33.107Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: only treat a positive changeset id as registered\n\nof_overlay_fdt_apply() stores the idr_alloc() return value in\novcs->id before checking it. On failure the stored id is negative,\nfree_overlay_changeset()'s \"if (ovcs->id)\" check passes, idr_remove()\nis called with a negative id and list_del() runs on ovcs->ovcs_list,\nwhich is not initialized until after the id allocation. An allocation\nfailure at that point dereferences NULL.\n\nMake free_overlay_changeset() treat only a strict-positive id as\nregistered. The rest of the function already copes with a\npartially-initialized ovcs, so the error path stays a plain\ngoto err_free_ovcs."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/of/overlay.c"
                    ],
                    "versions": [
                        {
                            "version": "61b4de4e0b384f4a22c55c3bada604da49cec4e1",
                            "lessThan": "cc688475c56d34a2b584141f9544cbe23360080d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61b4de4e0b384f4a22c55c3bada604da49cec4e1",
                            "lessThan": "c08a54df9d33dcd6ff089adc9434b2c008af3a39",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61b4de4e0b384f4a22c55c3bada604da49cec4e1",
                            "lessThan": "0d1525fdcd3355672b7485d61e55df6824ab5ad1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61b4de4e0b384f4a22c55c3bada604da49cec4e1",
                            "lessThan": "c875407c34dadaef0599834ad9c815f4c9f50d15",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "61b4de4e0b384f4a22c55c3bada604da49cec4e1",
                            "lessThan": "44081d708b5b885487bac792db78324b7b4c267d",
                            "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/of/overlay.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "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": "4.15",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.18.56"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.2.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/cc688475c56d34a2b584141f9544cbe23360080d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c08a54df9d33dcd6ff089adc9434b2c008af3a39"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d1525fdcd3355672b7485d61e55df6824ab5ad1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c875407c34dadaef0599834ad9c815f4c9f50d15"
                },
                {
                    "url": "https://git.kernel.org/stable/c/44081d708b5b885487bac792db78324b7b4c267d"
                }
            ],
            "title": "of/overlay: only treat a positive changeset id as registered",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}