{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-68293",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-16T14:48:05.292Z",
        "datePublished": "2025-12-16T15:06:13.428Z",
        "dateUpdated": "2026-05-11T21:50:21.654Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:50:21.654Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: fix NULL pointer deference when splitting folio\n\nCommit c010d47f107f (\"mm: thp: split huge page to any lower order pages\")\nintroduced an early check on the folio's order via mapping->flags before\nproceeding with the split work.\n\nThis check introduced a bug: for shmem folios in the swap cache and\ntruncated folios, the mapping pointer can be NULL.  Accessing\nmapping->flags in this state leads directly to a NULL pointer dereference.\n\nThis commit fixes the issue by moving the check for mapping != NULL before\nany attempt to access mapping->flags."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/huge_memory.c"
                    ],
                    "versions": [
                        {
                            "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
                            "lessThan": "592db83615a9f0164472ec789c2ed34ad35f732f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
                            "lessThan": "d1b83fbacd4397a1d2f8c6b13427a8636ae2b307",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c010d47f107f609b9f4d6a103b6dfc53889049e9",
                            "lessThan": "cff47b9e39a6abf03dde5f4f156f841b0c54bba0",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "mm/huge_memory.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.61",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.11",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "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": "6.12.61"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.17.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/592db83615a9f0164472ec789c2ed34ad35f732f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1b83fbacd4397a1d2f8c6b13427a8636ae2b307"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cff47b9e39a6abf03dde5f4f156f841b0c54bba0"
                }
            ],
            "title": "mm/huge_memory: fix NULL pointer deference when splitting folio",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}