{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43228",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.994Z",
        "datePublished": "2026-05-06T11:28:26.292Z",
        "dateUpdated": "2026-10-15T10:07:13.116Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-15T10:07:13.116Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfs: Replace BUG_ON with error handling for CNID count checks\n\nIn a06ec283e125 next_id, folder_count, and file_count in the super block\ninfo were expanded to 64 bits, and BUG_ONs were added to detect\noverflow. This triggered an error reported by syzbot: if the MDB is\ncorrupted, the BUG_ON is triggered. This patch replaces this mechanism\nwith proper error handling and resolves the syzbot reported bug.\n\nSinged-off-by: Jori Koolstra <jkoolstra@xs4all.nl>"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/hfs/dir.c",
                        "fs/hfs/hfs_fs.h",
                        "fs/hfs/inode.c",
                        "fs/hfs/mdb.c",
                        "fs/hfs/super.c"
                    ],
                    "versions": [
                        {
                            "version": "a06ec283e125e334155fe13005c76c9f484ce759",
                            "lessThan": "559f856b109c45844816a1693e259f93d3556c61",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06ec283e125e334155fe13005c76c9f484ce759",
                            "lessThan": "b6536c1ced315fa645576d3a39c6e07f2a472962",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a06ec283e125e334155fe13005c76c9f484ce759",
                            "lessThan": "b226804532a875c10276168dc55ce752944096bd",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/hfs/dir.c",
                        "fs/hfs/hfs_fs.h",
                        "fs/hfs/inode.c",
                        "fs/hfs/mdb.c",
                        "fs/hfs/super.c"
                    ],
                    "versions": [
                        {
                            "version": "6.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.6",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.18",
                                    "versionEndExcluding": "6.18.57"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "6.19.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.18",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/559f856b109c45844816a1693e259f93d3556c61"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b6536c1ced315fa645576d3a39c6e07f2a472962"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b226804532a875c10276168dc55ce752944096bd"
                }
            ],
            "title": "hfs: Replace BUG_ON with error handling for CNID count checks",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}