{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23223",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.987Z",
        "datePublished": "2026-02-18T14:53:26.603Z",
        "dateUpdated": "2026-05-11T22:02:42.267Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:02:42.267Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix UAF in xchk_btree_check_block_owner\n\nWe cannot dereference bs->cur when trying to determine if bs->cur\naliases bs->sc->sa.{bno,rmap}_cur after the latter has been freed.\nFix this by sampling before type before any freeing could happen.\nThe correct temporal ordering was broken when we removed xfs_btnum_t."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/xfs/scrub/btree.c"
                    ],
                    "versions": [
                        {
                            "version": "ec793e690f801d97a7ae2a0d429fea1fee4d44aa",
                            "lessThan": "1d411278dda293a507cb794db7d9ed3511c685c6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec793e690f801d97a7ae2a0d429fea1fee4d44aa",
                            "lessThan": "ed82e7949f5cac3058f4100f3cd670531d41a266",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec793e690f801d97a7ae2a0d429fea1fee4d44aa",
                            "lessThan": "ba5264610423d9653aa36920520902d83841bcfd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec793e690f801d97a7ae2a0d429fea1fee4d44aa",
                            "lessThan": "1c253e11225bc5167217897885b85093e17c2217",
                            "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/xfs/scrub/btree.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.72",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.11",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.1",
                            "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": "6.9",
                                    "versionEndExcluding": "6.12.72"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.19.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1d411278dda293a507cb794db7d9ed3511c685c6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed82e7949f5cac3058f4100f3cd670531d41a266"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ba5264610423d9653aa36920520902d83841bcfd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1c253e11225bc5167217897885b85093e17c2217"
                }
            ],
            "title": "xfs: fix UAF in xchk_btree_check_block_owner",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}